Once in a PVP situation, what options does a player have of escaping the attack of another player, short of killing him?

[Kevin]: That depends on the other player. I've seen people talk their way out of a combat. I've seen honorable opponents leave their enemies unconscious on the field without feeling the need to deliver the deathblow. Yes, the other answer is you can simply run and try to get away, I seem to remember Han Solo using that tactic a couple times.