It smells like a AR media hype to me. Remember when they bought a boa and put it somewhere so they could "find" it later and claim there were escaped snakes?
Perhaps a bp got loose but when have any of us seen a BP wrap someone's leg biting? I don't know aout any of you, but my pythons refuse to hit and wrap rats that are too large... and a 1 yr old is WAY larger. Perhaps it was loose and it struck the foot when the kid kicked or stepped near it.. but wrapped? That sounds off to me.