> They commanded full power 15 seconds before the crash
Not 15 seconds before the crash, 15 seconds before the end of the recording. Then overran the runway 10 seconds before the end of the recording, then started crashing into objects 7 seconds before the end of the recording.
Thrust was reduced back to idle 11 seconds before the end of the recording, so just before departing the runway.
Ah, those timings make a lot more sense.
They aborted the go-around attempt because they were literally at the end of the runway; Probably because they thought it would be "safer" to run off the end without the engines rapidly reaching full thrust.