I know its pretty common for most if not all spiders to have a slight wobble either while feeding or just lounging about. My 2010 baby male has a horrible wobble at times. When he gets excited (around feeding time) his head looks like one of those 'crazy dazy' water sprinklers. I feared at first he had ibd but I've never experienced it in my other 15 snakes. I had him in the quarentine room for 3 weeks and he continues to head weave about. I checked all his tempratures as well as humidity. He has 3 hides and 2 water dishes as well as nice soft bedding. He's eating well...it just well...looks weird.