I think crownsy's take is the most likely scenario of what occurred here but then that begs this question to be answered, how the hell did the doctors not examine his knee so thoroughly they they misdiagnosed a bone spur for a sprain? The man gets paid $22 million a year and is the heart and soul of this team. An MRI, an x-ray, a CAT scan, and any other freaking picture they could have taken should have been dome immediately and found out what the problem was from the beginning.
That said, I still think they have what it takes to win it all. Call me nuts or just an idiot diehard but I still think they have that heart, tenacity, courage, and fight to beat any and every team out there in a 7 game series. GO CELTICS!!!