Yeah his is only when he is reaching upwards in the tub. I remember when I got my bee home he was lying with his head upside down in the tub and I had to prod him (gently) to make sure he was still alive!
My spider rights himself so quickly it is barely noticeable but I was curious. He's such a character!
My bee has never shown signs of the wobble past day one, head upside down moment!