This quest is literally impossible to complete.
Define impossible: I knock down the door right next to him.
Click on the Beam.
During the skill check to lift the beam...the area bursts into flames and a popup comes up that the quest is complete...because he went from fine to over-done (before I could select complete on my successful check).
I will try turn-based mode, but seriously this lag fest of an area needs serious work.
At least the main character was saved just fine.