As I suspected, a short while after I was unloaded I was ordered to drive 45 minutes up the road to El Paso and get on the board there. Why I couldn't be put on the board while I was driving there is beyond me.
Arrived 1000 local time and have settled down to wait. I intimated to my fleet manager after yesterday's fiasco that perhaps a nice long weekend run would be in order. "See what I can do" was the response.