First, I am NO turtle expert. Don't own any, I've taken care of RES before but not enough to actually (comfortably) say I've worked with them.
That aside, I do know that shell rippling and pyramiding is the cause of very poor nutrition, not enough calcium and limited or zero access to UV lighting or natural sun. Pyramiding can be related to MBD. It's irreversible, but you can still take great care of your RES and he can live a happy life. My understanding is that is is much more common in tortoises.
Maybe you could describe your feeding/setup and someone can give you more info
edit - I just read your other post, doesn't sound good...post a pic