It appears most likely that the TLP events are similar in origin to the bright fireball & meteorite fall events seen on Earth.

The bright long lasting events in this case being a slow impact or a bigger then usual lander with a resulting crater floor flow & evaporation of hot compressed rock.

Sad news is that the lunar seismoscope/geophone planted by the Apollo moonshots is no longer operational as a small impact would result in a spectacular ringing signal.

Have a nice day: Ag