I had the same thing happen with mine. Luckily in a moment of clarity I put it in the shower of my basement bathroom after I pitched the starter. It contained most of the explosion. I usually put my fermenters under my bar. That would have been a disaster.
If this was the deciding factor in whether or not most of us did something we would probably be in a different hobby.
That being said, Go For it. Rig up some kind of tripod so you can adjust the heat or get a good bed of coals going and then you can adjust he heat by moving the coals in and...
I tried this recipe shortly after I started lurking on this forum. I tapped the keg last weekend and HOLY SHNIKES its awesome!!!!!!!! Great body, a little residual sweetness, mouthfeel like your rubbing your tongue on velvet, even with carbonation to 2.5-3.0 vols.
I tapped the keg and was...