Jones is still a very good player, and will (at worst) be a good player this year.
I see no reason why the captain of the football club needs to be its best player (remember the shock when Buddy was named captain of the All Australian side). Accordingly, there is no reason to get rid of Jones.
The club seemed to do very well with him and Viney last year. If it ain't broke, don't fix it.
We should have known something like this was going to happen, he originally requested a trade from Brisbane to 'go home' to WA, then decided that home didn't matter as much as a bigger contract at Melbourne.... we knew the kind of player we were getting into bed with, but ignored that and deserved what we got.
If Trengove comes back in, the boys might be inspired and perform well, even then, I think it will take a fair bit of luck for the boys to snag the win.