[Mikelb]

Those plates are rivited on... Take them off at your own risk(you'll have to figure out how to reattach.)
Those plates are there for a purpose. They keep the oil from shooting through your PCV into your intake. Those baffles are designed to let the hot air (which contains a mist of oil, which is what cruds your intake) back into the intake, but not the oil itself.

If you sand blast that VC, sand WILL get into the VC. It WILL get stuck behind the baffles, and most likely not all of it will be removed. This leaves you with a chance of dirt getting into your engine. Check on Tuners. I read over this awhile back. Lots of people had issues with sand getting stuck behind the oil baffles and coming out later.

IIRC, someone on tuners came up with a way to remove the baffles for cleaning and reattach them with screws.

Check there, and if you don't find anything lemme know and I'll look for ya.