I wouldn't be against it. If Tyrod keeps showing he cannot get it done then it's a no brainier. Cut ties while you can. Get a true top 10-15 Qb and hope you can keep everyone healthy for a season. Draft a young talented Qb in the middle rounds to groom, or hope Jones can become something. Sign EJ to a 1 year deal for backup money just in case romo goes down and Jones can't progress. Boom, playoffs.
Maybe trade Dareus to Dallas and even out the $20m contracts.