I'm gonna play devil's advocate here.
Yes, Brandel's act is getting old and stupid. But I cant argue with results. TW hasnt won a major in over 5 years now. Is what Sean Foley is teaching him really the reason he is playing at this level? Or could TW achieve this level with any coach? I mean he is the best player in the world, probably the best ever.
On the other hand, I do think Foley has helped correct a lot of his errant shots an sorta hone his big misses to little misses. I really dont think it comes down to coaching at this point. Foley has gotten TW (along with TW himself) to the elite competition level in almost every tourney again. After that is comes down to the little crazy person picking at TW's brain during those majors. Its all in his head at this point and until he chills the hell out and stops overthinking, he will not be winning a major again.