If you escape, you finish the action by moving into any space adjacent to your opponent(s).
Infiniti2000 said:You never have to move more than five feet to escape a Large or larger creature's grapple. You share the space and can exit into any adjacent square, just like if you were dismounting.
The escape itself doesn't provoke an AoO, but the movement does. Unless you mean to argue that you are not moving, it provokes an AoO.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.