I hear you, Grn! I felt like that at 200. I still had a really decent sized "pooch" of fat hanging off my stomach at that weight (sorry, TMI!) and I figured if I had that much actual fat in my belly area, it wasn't healthy. But I found it extremely difficult to get below 200 and stay there. I fluctuated between 202 and 198 for a year and a half. Basically, I was maintaining, but in reality, I was trying to get down to 175 and it just didn't happen. I'm not sure what I'll do this time, but I do know that varying what you do is the best way to shake up any plateau. Sometimes you need to eat different things, sometimes eating at different times helps, while at other times, doing different exercises does it. I do think interval training is a great idea. It seems to really be helping me now. Have you tried tabatas? There's some info on them in the 100 lb club forum
and I think they are pretty interesting and worth checking out. You might try a class, like Jazzercize, Zumba, Nia, or anything else that gets you moving in a different way.
Have you checked with the maintainers? I think they are the experts on this issue. Most of them dealt with a time when they could not get past a block, but eventually they found their way around it.