There is still plenty of time for CPU, IRE of Sunguard to make their bid.
This now puts a floor on the price. So I wouldnt be in a hurry to sell out on the re-open.
I suspect it will open above 1.73 as the market will be anticipating a higher bid.
Needless to say there will be plenty of hedge funds ready to scoop up stock at $1.50 and above if it does trade that low.