I don't remember the exact numbers, but I think Jones was set to make slightly over $1.05M this year (and next), if he made the Packers 53. Instead, he opted to open his mouth and complaind. As a result, he was not given many reps (if any?) in preseason and released. Now he could potentially make $100K with Cowboys, if he sticks around the whole season.
Like HRE said, his self worth was way over valued. Had he kept his mouth shut and put in the work, he might have had a prominent role in this defense. Instead, he missed paychecks for 4 games and ends of on a PS.
If nothing else, he might serve as a good cautionary tale for some of the younger players whose ego's might get the better of them if they don't keep it in check.