I was in a mutah marriage and out of anger the man ended the marriage with the words of him leaving me. Can we remarry as per the mutah rules and is there a specific waiting time?

For a temporary marriage to end before it's time, the man must 'forgive' the remaining period. Just saying I'm leaving you is not enough.

If he has forgiven the remaining time on the marriage, then to remarry him there is no need to keep a waiting time