I scortched a 5 gallon extract batch once. and I mean I SCORTCHED IT. I had to chisel the burn off the bottom of my kettle. I added the extract to my keggle running full blast with 150k burner. I waited until it all dripped and scortched to the bottom of the kettle before I stirred.
The result was a very dark, scortched brew. I thought it was a failure, but i thought i would pitch the yeast and go trough the motions.
I ended up loving it. And if you think about it... scorched extract is nearly the same as a roasted grain, the sugars become more complex. Anywho, that was the best pilsner i ever brewed.
So chipper up, if all else you can say its a scottish ale
Also another worse case scenario is to make a very light beer and mix the two when they are aging. That way you will have 10 gallons of lightly scortched beer