I still view this outcome as unlikely, but OSU got a bunch of help this weekend with Wisconsin and Minnesota winning.

If you're unfamiliar, if OSU-PSU-UM all finish with 1-loss (to each other) then the tiebreaker becomes the combined conference winning percentage of their respective West division opponents. 

Currently

OSU: 6-6

UM: 5-7

PSU: 5-9

Obviously OSU still has to play Wisconsin and Minnesota so that would add losses there, but it wasn't looking too good before this weekend.