Crumball only gets one attack if he is attacking with natural weapons. If you want multiple attacks, you have to take the damage opponent option with iterative grapple checks.
You might wonder how I know something about grappling after botching the rules almost every time as moderator. It came up in Gansk's game last night, so now I know one thing about grappling.
Hmmm.
the SRD does say: "You can’t attack with two weapons while grappling, even if both are light weapons." But is by no means clear that you can't make multiple natural attacks.
Assuming that ruling stands :
Crumbull will pin with his first grapple check then use his other iternations to squish the queen.
A (huge) skinny looking panther - and I mean like McBeal skinny - with blue fur, six legs, and a bad attitude, appears at 30n65e (or thereabouts...) and snaps a tentacle (did I mention the tentacles?) in Crumballs general direction.