The fuzzy screen is you dying. Probably from falling too far, as that's what got me a lot before I read the instructions.
It does make sense though, in an odd way. falling too far while going back in time is the equivalent of jumping too high in normal play. Which is impossible. Ergo; death.
Also you can jump as high as you want, because that just counts as falling in forward-time. It's, uh... it's hard to get your head around (it was for me, at least).
Fun game
. I loved the graphics, and the concept was cool, once I realized why i kept dying.