This is a very, very difficult situation. There have been over 41600 posts and to physically remove them all will take a lot of work. There's always the risk that these spammers will return and add additional posts. We're doing everything we can.
No, there isn't, unfortunately. Not that I can do anyway, there's not a lot any of us can do until the admin close down the forum to deal with the problem. Otherwise, it's like banning someone and two people come in their place! It's a losing battle in the short term. Thanks though!