Luther: "Jesus in His Human Nature Got It Wrong" ?

Here's an odd Luther-related statement attributed to Tim Staples from the Catholic Answers Forums:

In a recent episode of Catholic Answers focus, Tim Staples said that there was an instance where Martin Luther said Christ in his human nature was in error on the subject of free will and that St. Paul was more reliable. I had never heard this and would be very interested to read where Luther said that. Could anyone here point me to a citation?

There were a number of comments before I joined in, including: that Mr. Staples misinterpreted a section from the Book of Concord,  to

"I very much doubt that Luther made such a remark..."
"This sounds like a case where Luther was probably saying something to the effect that we look at passages that speak directly to an issue to clarify the meaning of a passage which does not address an issue directly..."
"...anything that Tim Staples says about Lutheranism or Luther with a huge grain of salt..." "...Or smaller If he provided no context or source,"
"If Luther had ever said, or written, that Christ was in error, I think we would have heard about it before now. In error about anything at all, however trivial..." 

I had never heard anything like this before either. Luther was prone to strong hyperbole. Mr. Staples could easily be referring to an obscure Table Talk comment. Often those comments lack clear contexts that secure a definite theological position.

The person who originally brought this up was gracious enough to grant my request to provide a link to the broadcast in which Mr. Staples made the remarks in question.  Advance the show to around 15:50. Mr. Staples is having a discussion with Cy Kellett]. Here is a transcription:

Tim Staples: How man times in Matthew 23:37.... Jesus weeps over... at least in Luke's version he weeps... but in Matthew's version, "Oh Jerusalem Jerusalem you that killeth the prophet how often I would have gathered you as a hen gathers her chicks... but you refused...you refused..." Luther was so... Cy, I don't know if I've ever shared this with you, but... this is gonna shock you. Luther was adamant with this understanding of the passivity of the will, that he actually wrote that Jesus in his human nature got it wrong there.

Cy Kellett: oh Man! 

Tim Staples: He got it wrong there. 

Cy Kellett: Jesus is not a reliable teacher. 

Tim Staples: He didn't have the fullness of the revelation that Saint Paul later got. 

Cy Kellett: oh, so you put Saint Paul over Jesus.

Conclusion
Mr. Staples launches into his discussion of Luther by first commenting on Matthew 23:37. The obvious place to look for such a quote as described is Luther’s Bondage of the Will. The passage is discussed, but not quite as explained by Mr. Staples.

See LW 33:144-147 (or Packer’s translation 175-177). There Luther explains that God incarnate weeps and laments over “the perdition of the ungodly.” Then he states, “Nor is it to for us to ask why he does so, but to stand in awe of God, Who can do, and wills to do, such things.” God as the incarnate word in his humanity weeps for those who rejected him. Then Luther presents a typical counter to this… that some would run to the secret will of God when things don’t quite add up. Luther then goes on shortly thereafter to state it’s not his argument to refer to the secret will of God, but Paul’s in Romans, that God is the potter and he can do what he wants to in his hidden and secret will.

Here is link to an inferior English translation of Luther’s Bondage of the Will. This link goes directly to the page in which Luther begins comments on Matthew 23 (the same passage Mr. Staples was commenting on before his Luther comment). This translation refers to Christ shedding “useless tears” over Jerusalem. Luther then goes on to contrast this with Paul’s revelation of the secret will of God (p.168). If possible though, use LW 33 or the Packer translation for reference.

If this is the passage from Luther Mr. Staples has in mind, I can sort of see how, given Tim's presupposition of the freedom of the will, he could make the interpretation he’s making. I think its misconstruing Luther’s words, but only Mr. Staples can clarify if this is the passage from Luther he has in mind, and then explain how he reads it. I believe Mr. Staples was probably speaking “off the cuff” or extemporaneously and misspoke that Luther exactly wrote what he attributes to him. Rather, I think given an opportunity to clarify, Mr. Staples may say his comments about Luther are his conclusion of what Luther's words imply. I’ve interacted with Mr. Staples before. I suspect if I ask him about what he was referring to, this is the context from Luther that he had in mind. I suspect also, if given another opportunity, he would flesh out his remarks and make them more cogent.

To echo one of the folks on the forums, "If Luther had ever said, or written, that Christ was in error, I think we would have heard about it before now." Without actually contacting Mr. Staples to clarify, I suspect this is the context from Luther he's referring to.