Good to hear he is safe and all is well. Next time you hear a thump I bet you investigate the noise.
Oh you know it! He has a total of 30 lb of weights on his tub lid until we can buy a more secure tub...just try and get out now you little jerk!!!
Also, I investigated and it indeed WAS the plastic warping from the heat lamp...even though it's suspended quite high and on a low dimmer, it warped enough for the little jerk to push out.