I agree with OT that your ex might be a threat to himself. He is obviously overreacting, but you need to keep yourself from overreacting as well. Stay calm.
I cannot imagine that his second W is going to be awarded enough spousal support to amount to anything since they've been together so short of a time. Is he paying you much in support? Because I can bet she is not entitled to anything more than what you get now, if at all.
He needs to talk to a L before he makes any predictions of how bad it might be. Any hardship visited on your ex is likely to be translated into a hardship to you, his first wife, and family, since he owes you first -- so I can't see a judge rewarding her at your expense, but then again, our legal system is frakked up. A L should be able to set his mind somewhat at ease.