Vlad has released a vid on dynamic joint breaks, something that i always noticed in his demo's ... it seems to be a staple of the work he does and i like it alot, very sneeky! It is similar to some of the work i trained in Daito Ryu.
The only thing i notice here is that it is quite reliant on extension on the part of the attacker, as with alot of Systema demo's, how it would work against very short work (touch or inch power) would be interesting to see.
thoughts.
cheers
Chris