You've got that backwards. E Kane came into the dressing room in his track suit (against the dress code) & casually announced he was having elective surgery rather than helping the Jets try to get that 1st ever playoff spot they were striving for. That was the final straw.
BTW, read about his off ice antics those years in the Peg. Fights in nightclubs, trying to get restaurant owners to pay him to eat there because surely having the immortal Evander Kane would pack even more into restaurants that had waiting lists.
Demanding a trade right after the Thrashers were transfered while his teammates were buying in & giving the new location a chance didn't buy him much love either (from fans nor players).
Good thing the Sabres were looking to tank so traded a ransom for a problem child.
SJ just bought a big problem. Look @ his record & you'll see his best & healthiest years are always the 1s when playing for that next contract. If the high expectations are ever met look for them to be in year 7.
I think he and the Sharks will be fine. They're not as uptight as an organization as Winnipeg seems to be. There's a little more room in there for personalities to be themselves. Getting bent out of shape over a dress code violation in that environment doesn't exactly shine a good light on the rest of the players and organization there even if Kane is in the wrong as well.