Even though everyone seems to be saying this is ok, etc, I tend to agree that him not sticking to the contract seems to just void the reason for even having one at all. If there is no set number around the whole thing, and the number doesn't matter, then it should be removed and reworded.
I think he could have been supportive in understanding what was going on, etc, but the basis is still the contract was broken. The contract is worthless. It was meant to keep you "in line", it was about following-through with something, about consistancy, about feeling safe and having boundaries. Neither seem to be following the contract as it is written now.
The contract was made for you to be held responsible for your actions, and he didn't not hold up his end of the deal.
It can be deflected as many times with "but, but, but...", in terms of the contract, it was broken very clearly.