I tried your rocking method the other day and didn't really have any luck. Jacked on side and blocked the free spinning wheel so it would not move. I was taking the machine to wide open throttle, back and forth and the stuck wheel would not jar free.

Anything else I could try short of cutting? I was going to try and smack the drum around a little, then heat the outside of the hub and then try the this rocking thing again.