[opel]

And the point of the James socks, a wormhole had opened up, which is what caused one sock to be sent back, and destroy James brain.

The theory I believe this movie suggests, is that points in time -and all their alternative possibilities- loop endlessly, which would explain Frank the bunny ate my sock. He is a product of an alternate time loop.

Presumably, the missing sock also falls into that time loop. But the wormhole caused the other sock to fall into an alternate route. And going by what I previously posted, it's a seriously of alternate realities and time loops that come together to cause the missing sock to crash in James room, to cause James to put the remaining sock on his penis, and the eventually kill Donnie to close the wormhole that Donnie's life being spared opened in the first place.

The wormhole could presumably opened because, in the time loop of Donnie's life, his life being saved from the penis from the future crashing into his room is what caused the wormhole to begin with. He was working outside of the fabric of time, which caused the wormhole, which caused the missing sock to fall through time, which caused James to save him, which caused Donnie to be working outside the fabric sock of time. It's a cycle that doesn't end, until something happens to change it (or UNchange it, as the case may be).

putting a sock on my penis doesn't make any sense, and that's pretty much the bottom line. Donnie Darko is a movie that tried to make sense of it without making TOO much sense, and that's the end of that.