well, in answer to the OP, a lot of BMs were in Safari on the night in question and no one saw any commotion or heard anything about it so we can put this one down to hearsay and gossip.
do not forget the thais LOVE to embelish a story - i remember a girl who was unfortunately stabbed and died of her injuries but the rumour that went round was that she had been gutted like a fish possibly devil worshippers.