He doesn't really do much at AMC, though, and never really did. Taught the Pankration classes at one point, but I haven't seen him teach a class in years. Because of that, they don't even teach Pankration at AMC anymore, just "submission wrestling". And yes, they are different.
It's good to see him back fighting, however. He's a good fighter and still has plenty left in him despite his previous injuries. I remember having to spar him a couple years back....yikes!