I had an English professor in college who always asked us to comment in writing on the papers we were about to hand in. He always asked this question:
"If you had another 24 hours, what would you have done differently on this paper?"
It's depressing to lose an event that is this important. But while you've spent so much time, effort and money in preparing for it, don't let the bad news overshadow the fact that when it does come time to race, you'll have had extra time to correct those issues that you know have been bouncing around in the back of your mind, and address any doubts that might still linger.
Yep, it sucks. But it won't suck forever.
My band is playing tonight, beer will flow, and I'll raise a Fosters to you and your mates.
Perceiver.