I crossed Wed. about 3 in the afternoon and there was no delay at all. I have never been stopped coming into Arizona, only going into California. Lately there has not even been anybody in the booth though, make the stop at stop sign and continue on. I did notice a line of cars and something similar to what you were describing when I left Arizona back on the 7th and I was wondering what was going on also, because as I said, I have never had to stop coming into Arizona, but always going into California from Arizona or Oregon on any route.
Your comments confirm my experiences. That is why this was so strange.