(Tick) (delay) OnActivate>NamedBrick (door)>SetEvent Enabled (events) (tick)
(No tick) (delay) OnActivate>NamedBrick (door)>SetEvent Enabled (events) (no tick)
(Tick) (delay) OnActivate>Self>Toggleeventsenabled (0 1)[or the numbers of the above two events if they're different]
I hope that helps.