It seems to me like everyone is treating a block as though it prevents an action from being attempted. It doesn't. It just makes that action a little more difficult to accomplish. I have absolutely no problem with the concept that being involved in a grapple might feasibly make it more difficult to successfully incite emotion in the person doing the grappling. To put it another way why on earth should a person who's managed (somehow, given a WCV's natural advantages) to get the drop on a WCV be penalised for doing so? I'd argue that the reason the block should apply to Incite Emotion is more tied in with the mental focus of the person doing the grappling than with anything specifically physical - they're in a position of power, focussed on preventing their quarry from escaping. Essentially it takes more to break their focus than in a different situation, but it's not impossible.