I think the best move would be to back off. They'd be unsure whether to pursue you or to defend themselves against the person closest to them. Mutual uncertainty on their part means they'll attack each other first, instead of pursuing you. Whoever won would get the pool stick, but they'd also be tired and you'd have an advantage. You also would have had the opportunity to observe their fighting style.

Needless to say in real life I would just die.