Now that all of today's games are done, the picture is more clear. College Hockey News has a tool called "You are the committee" where you can test the different outcomes to determine how it will change the Pairwise:
https://www.collegehockeynews.com/ratings/yatc.php
As odd as it seems, it looks like UMass's fate will be determined by the outcome of the NCHC final between Denver and Omaha tomorrow night. The other games don't appear to have any impact.
If Denver wins, UMass gets in. If Omaha wins, Colorado College gets in instead of UMass. The game goes at 6:30pm MT tomorrow.