Would of had traction fully off and launch engaged...the gtr is fully rwd until slip is detected..could of been the rears lit up...power went to the front but he was correcting and they slipped also...pretty similar to what happens to a regular awd on snow...if there's no grip to any wheels you will spin....couple that to that fact the traction control is calibrated for 550bhp on the 2012 models..if he had he tuned up to 650 or 700 bhp it might of confused the system