[Mod Idea]Dwarven Defender - Help Required

Lets be honest here, a Dwarven Defenders ability to block attacks at a reduced speed is NOT magical. It is training. That being said, should a Dwarven Defender not be able to STOP defending at his own whim? That's the idea behind this mod. It doesn't exist yet, I don't have the know how yet, but by George I'm going to make it happen.

So. Are there any here that could point me in the right direction? I imagine I need to edit the abilities of the Defensive Stance ability to add a temporary ability to 'dispell' Dwarven Stance....

Here I go! If you have ideas on HOW to do this, just throw them in. They could be better than the n00b level coding that is available to me.