Demolition traps still there?!

Downed fury after he used demolition, trap disarmed text for taps, several rounds later all traps go off and team goes down… why??

Not perfectly clear what happened. Was this PVE? PVP? Was Fury on the enemy team, or was it a team up? What other characters were on the enemy team? Any other characters that might have set traps?

I believe in nodes with waves the enemy occasionally gets team-ups for a character that is also in one of the waves (Nick Fury Demolition in this example). If this is the case, killing Fury in the wave will not cause the Team-Up-generated traps to clear.

This could definitely explain it.