Wave strike to escape grapple?

[nennafir]

What do you think about using the Waves spirit Shaman Wave Strike Ability to escape a grapple:

"Wave Strike (Su): As a standard action, the shaman can perform a melee touch attack that drenches a creature and pushes it away. The opponent takes 1d6 points of nonlethal damage + 1 point for every 2 shaman levels they possess and is pushed 5 feet directly away from the shaman. This movement does not provoke attacks of opportunity. A shaman can use this ability a number of times per day equal to 3 + her Charisma modifier. At 11th level, any melee weapon she wields is treated as if it had the quenching weapon special ability."

The think that makes me think it might work is "pushed 5 feet DIRECTLY AWAY FROM THE SHAMAN." I can definitely see that maybe if two people were grappling and some other force pushed on them, they might get pushed away together. In this case, however, it is indicating the the force of Wave Strike is such that it is pushing the Shaman and the target away from each other.

Thoughts?

[Ascalaphus]

I've seen other powers discussed that also moved one of the grapplers and maybe not the other - I don't think we ever found a clear-cut rules answer to whether it would break a grapple or just drag the other along. (Except in teleportation cases of course.)