The decision to open a door is left to the cabin crew member at that door. They look out, assess for danger and then decide. The crew member at L2 made a very good decision. To L1 and L4 it presumably looked clear, because it was.
Wallets, phones, passports are easily replaced. Hats on the other hand, are like rocking horse cr@p. Grap that, but throw your license on the fire, that should give you a nice long break.