I never said it wasn't true, but I don't think there's enough reliable information to start ripping into MP for this at this stage. It seems there's too much relying on translations and second hand sources lately, and people are letting it accumulate into unhealthy levels of hate for MP. I'm not saying it's all unjustified, but I like to give the benefit of the doubt rather than assumptions of guilt based on profiling.
I know some people figure "well he did this bad thing, so he'd definitely do this bad thing too, so I'll assume it's true", but I find that unfair.
I guess I didn't really notice anyone making assumptions that the worst-case scenario was true.
About half the people in this thread have, and certainly the people in the facebook group have. The point is, these snippets of a badly translated interview give us pretty much no information, but most people have just assumed that MP tried to sue the band, take the name, and/or stop them using songs where he wrote the lyrics.
The first two I just can't see happening. Sure he was upset about having to leave, but from the start he's held out hope that there might be some kind of reunion in the future, and he's not an idiot, I can't see any reason he would do something like that. As for the latter, it's technically possible, but I don't see what grounds he would have to do that, as "Dream Theater" wrote the music, so the band keep the rights to play it.
From a common sense perspective, the most likely legal action (which has been mentioned already) is the royalties situation, because only current members get paid a salary out the band's financial pot, and he may well have wanted more in royalties than would be standard because of all the work he's put in over the years, as he likes to remind us every chance he gets.