Finally fix the model issues! Might be done in a slightly hackish way, as I couldn't find anything better. You should now be able to play online and not see any more models lagging behind or not being animated.
The issues were caused by attempting to animate the stomach model. Basically, if we animate the stomach model, that causes problems and lag. But there's no way to tell the animation code if that is the stomach model or the normal one, so the only alternative was not animating the model at all, which meant players were moving around like chess pieces. It seems that skipping an (useless) attempt to animate fixes it all however.