The server automatically limits him I'm assuming because there is some problem in a script he's running that is raping memory usage.
Imagine you have a problem in your plumbing which means that 80% of the water going to your house doesn't even make it to your outlets, it gets wasted. The solution is not to call up your water company and ask them to push more water to you, it's to fix your problem. I had a look around his stuff but I have no idea what he's done to cause it. RMRK is vastly more visited but uses less than 10% of the RAM that anesis tries to use. Again, no idea what he's done =(
This is why I don't blindly install every SMF mod under the sun out there.