So after all that, here's my possibilities:
A) Burt dies and goes out in a blaze of glory: This makes for a good heroic sacrifice and just
feels right.
B) Angel dies and Burt lives: This would really reinforce the "anybody can die" aspect of the show and brings in a bit of reality. Death doesn't always make sense or follow what people would expect.
C) Heroic Rescue: The Tolkien solution as I'm thinking of it. It gives us a triumphant moment where everything turns out alright and our
characters make it out with some glorious stores to tell.
D) They both die and everyone is sad. Tragedy, we've been set up for it and if this happens, that set up will bee fulfilled.
The thing is all these possibilities seem...well, possible.