I think a book which aims to make a person "unlearn" something sounds like a weird concept. I'd say a better term was "relearning" or something. I don't really know if there even is any books like the one you're looking for, instead I think you should just read more advanced books, which may prove some of the things you've previously learned wrong.
And by the way, it's "plateau" I think. 
I was reading an interesting article that staters that players who wish to improve once they hit a plateu ( I hope I spelled it right ) , need to unlearn majority of what they know as it no longer applies , they were wrong etc. I guess my wuestion is what is a book ( or other resource ) which aims to educate players who have reached that barrier , by unlearning or teaching some new advice.
I would be mostly interested on a book that is aimed for intermediate players ( around 1500 or so ) . Any recommendations on such a book .