Act like adults
Agreed, except I would add that since there's no arbitration mechanism for disputes--just a person's trust and reputation--I can see why people get a little crazy about these things and go on the defensive immediately. The amounts of money involved aren't exactly small by most people's standards.
If jeremypwr made the mistake, and it was me I'd just fix it without restrictions or retaliation. He does have a decent reputation as a manager, and everyone makes mistakes. People can see it for what it is, and they should be trusted not to make any long-term judgements. It just looks like both sides of this dispute escalated it beyond the point where it needed to go. Kicking OP out of the campaign was a little harsh, but it's jeremypwr's campaign and he has the right to do that if he so chooses.
OP, there isn't much else to do except move on to another campaign if you can find one.
I only took to posting because he was the one in the first place that threatened to not pay me what he agreed to. Now here is his new post which I think you'll find interesting in the aspect of him not honoring the agreement we agreed to (scamming).
I was owed back into the campaign according to the agreement, which he just admitted was valid. So now what do you say? It's not scamming to put in writing that you'll make everything right, we'll delete it all and forget about it and not follow through with his end? Which lead me to exposing him? And Pharmacist, as you say he has the right to kick me out, yes he did, until he agreed to put me back in, which is in writing and you seem to acknowledge. Scammed $860 in potential because he is butthurt that he didn't follow through and I felt the need to expose all this bullshit he's pulling BECAUSE OF HIS MISTAKE.
If he already paid you for your work, then it's done. If he kicked you out from his campaign, it's his right, his privilege as the campaign manager and you can do nothing about that, go on and live your life, find another campaign and move forward, don't be a kid crying over something that were already out.