Rothfield is a moron. It's not a problem at all, and Mary having a 'cracker year' (or starting to) should not impact the fact that he needs to go.
Take 2015 for example; we were flying high in the first half of the year off the back of decent motivation and good defence. Then we crashed and burned, not just at the back end of the season but for the next 18 months. When other teams figured out our patterns and adapted, Mary didn't have the tactical nouse to combat it. Then he brought in the toxic blame culture and mediocre 50% win target. A decent half a season should not give him another contract.
At best, if he takes us deep into the finals and maintains intensity all year then he MIGHT be worth 1 extra year, at most. However, the coaching situation for 2018 NEEDS to be finalised in the next few months, by Round 10(ish) at the latest, so we can finalise the roster. And 2015 alone shows that this is far too early to be rushing to re-sign Mary.
The guy has made his bed over the last few years with his actions as well as his coaching (in)ability. He should be gone, and bringing Hasler in would be a great achievement.