Everything considered, this sort of "epic fail" (involving property damage) was probably an inevitable; the Mythbusters' fondness for high explosives, regardless of all the precautions they (usually) take, means something had to go horribly wrong at some point. They'll likely be taking more safety precautions due to the event, potentially moving from their favourite location for such tests to somewhere more remote, but that's to be expected.
Luckily no one was hurt by this, but something like this had to happen eventually. There will be damages to pay (there's little reason the Mythbusters shouldn't be covering those costs), but the "victims" will also have one HELL of a story to tell for the rest of their lives.
And because no one was hurt, this "epic fail" is absolutely hilarious.
The "victims" will probably agree, once they've had a chance to calm down from the scare.