In our last gaming session, an NPC wanted to flee the party. The PCs were standing around him, so he provoked a lot of attacks of opportunities against himself by stepping away.
The PCs didn’t want him to get away, so they tried to inflict the immobile bane on him. If the attack roll had succeeded, I was prepared to let him take a defend action and move half his speed without provoking AoOs. First question: would other AoOs that already triggered be cancelled after such a move or would the PCs still attack, even though the NPC isn’t in melee range anymore?
However, the attack did not succeed, so I invoked the rule of three choices. Since immobile is a level 1 bane, it can be inflicted even after a miss. Since it was a miss, the NPC didn’t even have the option of a defend action. In this instance I let him be immobilized, but it occurred to me later, that I could have chosen to move him 10 feet instead of inflicting a bane on the player. In this case, the question would arise: How to explain that he moved 10 feet (out of the clutches of his attacker) but is still suffering from the immobile bane? Could I as GM just lift it, since the PC is too far away now to grab him? Should I forbid the choice of immobile if I am already planning to let the NPC move away?