It is already starting to rise again. The nosedive happened so fast, and for reasons that are superficial to what BITCOIN itself actually is. More exchanges will open, more alternatives to Mt Gox will arise, and this "pop" will look like just another of Bitcoin's many volatilities.
I am very glad I held and didn't panic sell. Yes, selling at $250 and then rebuying at $70 would have been better - but it would have been lucky, and I'd rather hang in there for a longer term and sell a portion when I know I've made a decent profit, and keep a portion for long long term.
I could see it getting back up to $250 relatively soon, but hopefully with a much steadier and slower growth pattern. Probably not likely though - speculators aren't going to disappear because of one crash, especially when the commodity is still growing in the public's eye and still holds an increasing degree of fundamental usefulness for the rest of us non-speculators. I'm personally somewhere in between - I believe in BTC, but I also have some more immediate monetary goals which I know this BTC volatility will benefit.