As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BWI - INFLIGHT MIA-LGA. LEFT NUMBER ONE DOOR WAS OPENED WHILE STILL ARMED AND DOOR ASSIST BOTTLE WAS DISCHARGED. SLIDE FELL FROM HOUSING WHEN OPENING DOOR. AIRCRAFT REMOVED FROM SERVICE. REINSTALLED DOOR SLIDE AT LEFT NUMBER 1 DOOR AND REPLACED DOOR ASSIST BOTTLE. SYSTEM GROUND CHECKED NORMAL OPERATION.