Over time, it will probably go down. It may spike again before that, though.

It seems to me that the current spike is ironically from the closing of SR. Although,
bitcoin is due to spike in multiple unpredictable ways, such as in last April and January of 2012.

I don't know the full reason to their spiking, but if somebody were to inherit even a couple bitcoins It could turn into a large sum.
It's probably worth to wait until it reaches the peak of 250+ or so again.

-Wishes he had an ASIC miner right now.-