In order to get to the top, it seems likely that the injured person would first have to be lowered to and secured at the Death Ledge so that the healthy person could solo or rope-solo up an easier line. In the vicinity of the main rappel, The High Traverse, at 5.5, is the best bet by at least two grades.
Walk off the north end of the ledge onto the ridge. You couldn't drag a hurt climber off that way but it'd get you to the top where you could start the 3-ring circus on Westward Ha.