Bewildering people with his hilariously pathetic or just plain absurd actions is a common (if largely unintended) tactic for Alfred. He's like one of those baby birds that vomits on enemies to gross them out into leaving (something that Alfred himself is not above doing should the opportunity arise). The panicked squirming and screeching only intensifies when he finds himself constrained. This time, at least, it culminates into something useful.

He digs his heels in and slams his body backwards in an attempt to crush the killer against a rock or tree, bucking and twisting like a wild horse trying to throw a cougar off of its back. Without a pause he then lunges forward into a a fucking roll by using Dean's body as a nice cushion against the ground.

Sorry Dean. As obviously unprofessional as this kid is, it'll take some effort to silence him for good.