I'm a little surprised the guy didn't kill him during the disarm to be honest. To have one knife pulled on you is bad enough, but two?
As Genghis said it's a very important question to add to the 'what if?' pile with these situations.
Up until now I always assumed people would carry one weapon for some strange reason - an assumption that could have landed me in a whole heap of
. If you assume that they have more weapons then that changes the whole dynamic of the disarm.
Therefore I think the technique following a successful initial disarm should be something along the lines of 'Release the Kraken...'