That sucks... but you see that all the time at muddy races. You really need to think twice before racing a single bike in those sort of conditions. If you're gonna truly *race* cross, you need two bikes. I have two as a master, and many the guys out there even go with 3.
Nittany Lion - the first race in the MAC was such a sludge fest I remember lapping no less than 3 guys eating the "Deraileur Wrap" Sandwich
How about getting a new dropout welded on there, sell that baby... Get yourself two aluminum cross frames. Worry more about reliability than weight. Of course Van Dessel's are preferable!
Oh, and FWIW, I was talking to Justin Lindine this weekend at Providence, and homie spanked the Pro field 2x on aluminum Redlines...