Don't forget, just because the guy got an extension, doesn't mean he can't be fired at any time. AV was fired before his extension even started, I'm pretty sure Gerard Gallant was too, so was Bylsma a few years back in Pittsburgh.
Just because we extended him doesn't mean we have to keep him until the contract ends, it just means we have to pay him until the contract ends. I know, in before ''Well, ownership won't take the loss if he has time remaining! They're really cheap and they can't even afford to fuel up their helicopter!''.
Remember, DeBoer was extended and he was fired not even a half a season into his deal.
If I had to guess, Hynes probably has a 2 year deal after this and this was probably the last year of his deal, so I bet he's signed until 2021. MAYBE 2022, likely no longer than that. He was extended one year last season and he originally got a 3 year deal, so I bet he was a UFA coach after this year. So he's probably got 2-3 years with this. Doesn't mean he'll coach here for 2-3 more years.
The two biggest factors I think that are keeping him here are
1: Hall likes him and says he's the best coach he's ever had. If Hall decided not to re-sign here and Shero shipped him out, I think Hynes leash would get MUCH shorter.
2: The goaltending. Shero has went public already in stating goaltending is a big problem with this team (''What the hell is this guy is talking about?'').
I think that's what's keeping Hynes here. If we were getting pretty solid goaltending all year (Cory has lost us multiple games and Kinkaid probably has also, due to fatigue and overusage because Cory has been such a liability and almost unplayable) and if we were losing a lot of games, like the way we lost last night where the goalie played well, he'd probably be gone fairly quickly.