So after last Monday's class Matt goes to show us something. Normally when I do a sankyo from an ikkyo position, I establish the sankyo and apply some pressure all the way up. I do this because I think of controls as controls.... a way to control uke. If you just let uke up without some pressure then you there is a moment where you don't really have control. Although there is pressure, I don't think there is instant pain. It's more of a gradual thing. Use the joint locking to control uke.
What Matt was doing was strange.... it felt like he first stroked the hand out a bit or positioned it somehow. The initial movement is innocuous. But then he starts to apply sankyo from that ikkyo position and it's a totally different feeling from a typical sankyo. Instead of it just getting tighter and getting joint locking, it's instant pain and it's tight so you have no where to go. Feels more like nikkyo. He dialed out all the extra slack very early somehow.
What I'm wondering is whether this is useful as a control. If it causes sudden, strong pain, most people aren't going to just sit there and take it. I'd think that you'd start a wrestling match. Now, Matt would win as he could just break a joint but I think I'd rather control someone with less possible intensity(which maybe isn't possible but it's a goal). This variant of sankyo very much reminds me of Serge's aikido. With his aikido you must go in the direction he wants you to or your elbow/wrist is broken. Problem is, most people don't know which way to go. So they would just pop a joint.
Although this isn't the style of aikido I want to use(to me this seems more like aiki-jitsu), I'm definitely interested in understanding how this works and how to apply it. I'm wondering if it can be applied with less pain so you don't get into a struggle.