at the end of the day it might turn out to be as as simple as they were in a rush or badly vectored by ATC, came in too fast and too high, touched very late, then maybe bounced due to excessive speed, started initially to brake but then changed their mind and decided to re-launch since they feared to fail in stopping the aircraft before end of rwy and finally crashed on high speed with an accelerating aircraft and engines in take off power or spooling up to it.
so no brake or reverse failure, nothing wrong with the aircraft.