So here's the deal...
There are six conference championships tomorrow plus a third-place game in the NCHC. If all the favorites win except Colgate, then Yale gets the last at-large bid while Colgate & UMass-Lowell are out. So... Yale fans actually need to root for Harvard tomorrow, which is outstanding.
If all favorites plus Colgate win, then Providence gets the final at-large. Harvard is also in, while Yale & UMass-Lowell are out.
But the Crimson aren't safe: If all favorites win except BU, then UMass-Lowell gets the Hockey East auto-bid and vaults to 12th in the PWR. Providence would again get the final at-large, and Harvard would be bumped from the field.