Looking ahead - and maybe I shouldn't.  

First, I don't think it is possible to have a 4 way tie for the division.  That said, here is a possible 3 way tie.  We already beat PSU, PSU beats UM, UM beats (Lord, I hope not) OSU.  And assume all teams win out except for the aforementioned scenarios. Correct me if I'm wrong but I think UM gets eliminated for their 2nd loss (to ND).  Then it would come down to head to head, PSU & OSU, and we would win the division.  You could substitute MSU for UM and I think the results would be the same as MSU also has a non conference loss.  

And what is the order for tie breakers? Overall record, division record, overall conference record?