Some frustrated BC fans will claim that the money owed to Addazio makes him too expensive to fire. That's not the issue. BC has to view the contract as a sunk cost and every miserable season that he is kept on would lead to lost Football revenue, harder fundraising and fewer applications. It becomes too expensive to keep losing, despite what he might still be owed.
But money won't be the primary factor. I think it is more about Bates' power or lack there of. Because it was his first and most high-profile move, Bates is tied to Addazio. And he hasn't accomplished enough at BC to be viewed as anything other than the guy who hired Addazio and Christian. Bates benefits by giving Addazio more time. If, and only if, Addazio turns things around, will Bates earn back the trust with fans and BC leadership. If Addazio continues to struggle, no one around BC will want Bates searching for another coach.
If Addazio can't win more this year, I think it will be Bates who is fired (or not renewed, however you want to view it). It would then be up to Bates replacement to evaluate Addazio after five years and set the new direction for BC Football.
So get used to Addazio. I think he's going to be around another year or longer.