The Aircraft had departed LGW for JER. The Jersey Evening Post reported that number three engine was shut down due to severe vibration & the Aircraft returned to LGW.
To me this sounds like a serious engine problem which must have little bearing on previous incidents.
Whether my analysis is correct or not i note that "the usual suspects" have already leaped onto the bandwagon & we shall be subjected to another tiresome round of 146 Bashing by certain contributors whose obsession with the aircraft is verging on the unhealthy.
The people who i know who either fly or have flown the 146 like so many of its defenders on this forum are unanimous in singing its praises.