There's a reason they left the ECAC-West in the first place! What is it? Well, it's beacuse they're in the SUNYAC. Once the SUNYAC had enough teams to warrant an autobid, they began officially sponsoring Men's Ice Hockey. As members of the SUNYAC, each school is required to participate in the SUNYAC conference if the conference sponsors that sport. This isn't the Big East, wher Notre Dame is allowed to participate in all sport except football
So no, they will not. Unfortunately, I also anticipate that Canton will join the SUNYAC at least in hockey, if not in all sports (and it seems doubtful that they will join in all sports). As has been discussed before, perhaps the best option for the ECAC West, given the refusal of the other ECAC conferences to reorganize in order to help,is to collectively apply for associate membership in the SUNYAC for Men's Ice Hockey only (which would create the interesting situation where these schools exist as the SUNYAC in Men's Hockey, and as the ECAC-W in women's ice hockey). But that possibility hinges on the SUNYAC's willingness to take them (morrisville would get a vote, but so would Oneonta and New Paltz).