Regular season has co-champs, I believe. That isn't decided by tiebreaker. It is the seeding for the BE tournament that is dictated by the tiebreaker.
Providence even with the loss tonight is still probably my dark horse for the BE tournament. They have enough scoring talent that a few of their guys can just go off for a few games. Also, I wouldn't want to play them because I'm not sure how much control English has left over that group, meaning I could see a game getting physically out of hand if they are losing.