....so that must mean that he didnt actually go onto the runways ....
"The FLL ground controller (GC) instructed UAL1544 to taxi to runway 9L via taxiways T7, D, and B. As the flight was taxiing on taxiway D near runway 9L, the tower local controller (LC) noticed the airplane was going too fast to hold short of the runway. LC told the GC to tell UAL to stop. The GC said "UAL 1544 stop, stop, stop". The crew stopped on runway 9L, 30 feet from the centerline."
That's part of the NTSB's incident report.
You can download the full report here:http://www.ntsb.gov/ntsb/brief.asp?ev_id=20070712X00919&key=1