Your explanation kind of falls in line with what the comic of ROTS did. In the comic, Yoda tells Obi-Wan that they can learn the trick, but that only a Jedi can learn it. A Sith can never learn it. Upon reading that and then seeing the movie, I was just a little more pissed since there's no way Anakin could have ever learned it. Now I suppose if we take your explanation Gomer, then yeah, OB and Yoda could've taught Anakin at the last minute. Or we could all just accept the real truth:

George screwed up and came up with these other things to explain it. There's nothing complicated or thought provoking about it. It was, quite simply, a screw up.