I doubt either party is particularly happy with the situation.I'm a Jones fan. And I'm happy to give him a pass for last year.
That said, for the reasons you listed, I feel it's even more important for him to show up.
Get to know the new staff, scheme, players, etc.
End of the world? Naw.
Disappoiting? Yea..
The Phins are stuck with a contract that makes him virtually untradeable, unless the eat the money. They may do that anyway, if they can get a mid rd pick out of it.
Jones, IMO, is not going to be happy when his snap count is cut, in favor of younger and more assignment sound players.