Still, get some butter knives and duct tape. Create a brace for the thing
That's a great idea for how to get through the evening, but how do I fix my drum pedal? 
(rimshot)
Highly recommend you employ the duct tape + butter knife method. It can be done on the fly, costs a total of like $3, and lasts for a good long while. It's what I've been using for months now. It's solid and won't break and actually makes the action on the pedal a little better too.
[youtube=425,350]yS5gbIbcHJQ[/youtube]
And FWIW, they did fix this in the RB2 drum set revision. The stock pedal now comes metal-reinforced.