Wow! Nope, I can't explain Tank's randiness at all unless there was a hack of some sort involved! If you don't have any hacks then that would be a first for me! (and wouldn't be the only time the Sims have done things to surprise me, just when I think I've gotten them all figured out, lol!)

The constant following is cute, but can get annoying. I almost had to play with free will off when I was "filming" To Fear the Dawn because no matter where I put Charity, everyone else would always follow. :P She was like the Pied Piper, lol!