Yes, that’s the one I’m referring to. My point in bringing it up was to show Charlie that he is mistaken, and the machlokes isn’t necessarily whether we pasken according to the Rambam, as the mattirim are claiming to be going according to the Rambam.
As to whether this disproves your theory, although I disagree with you, I don’t think it does. At least some of the osrim use the term “k’ilu”, meaning even they may not hold it’s actually the type of request to malachim which is prohibited, but is assur because it appears that way.
Here is the S’dei Chemed I linked earlier:
http://hebrewbooks.org/pdfpager.aspx?req=43519&st=&pgnum=6&hilite=