Sorry, I have to disagree with you. You do realize that if they didn't put that caveat into the contract (and I read the contract when it came out) that the Democrats would have had a field day. Saying you promised and see you couldn't deliver.
Everything in the contract was delivered. Can you imagine the Democrats doing the same thing? No way. Term Limits was blocked in the courts, but it did work with a lot of state legislatures and it did put a lot of congressmen on notice. Balancing the Budget was stopped by the Democrats (as you know they really don't like this idea). Cutting taxes met the same fate back then.
It just took a while longer than some of us expected. Don't go trying to give the Democrats any ammunition, we need every bullet for the Al Quida in Iraq.