I don't doubt Kane needs surgery. I don't buy this is the reason he missed the Vancouver game and this is the reason he decided to have the surgery now.
Lets be honest here, if he wanted surgery, there would have been discussions with team doctors, his concerns discussed and the surgery done.
He would NOT have missed the Vancouver game with the explanation of "a coaches decision".
Something happened, whether you believe the reports about the clothes in the shower, the MIA until a phone call an hour before the game or not (I personally completely believe those events), what we do know for sure is that he missed the Vancouver game with an explanation of a coaches decision.
And now he has elected to go for season ending surgery. That isn't the usual way these things are done. Something else happened here.