Again, subject to confirmation, it appears that the SWA 737-700 used the entire length of 28R before turning off at the far end.
According to the tape they used taxiway "T" just past midfield and after crossing the departure runways, which is normal ops.
Air Canada 781 also used taxiway tango and held behind the WN.
Yes a bad time to go NORDO, but of course this sort of thing could only happen in the States