Press P, then hold shift and press P repetedly until the desired frame comes, as for going back either:
1. Use the slow motion that comes with 4.4 beta
Or
2. Restart the repay and pause it faster, then do the instructions above number 1
Let's be honest here, I can't restart the replay and get to the first 10 frames or faster. About 50 is as fast as I can press it.
4.4 seems a bit more reasonable