I did wonder, BM - you can't blame her though, I'm a handsome chap.
As it turned out, it was simply that there were two delayed flights that needed looking after and thus only needed one team of 3 to cope - she didn't want the others to see the obvious favouritism she has for me and the 2 I picked as my team, so she sent us out at 1.30 to take some "cargo" over to the depot. The others saw us go and then were told we would only be 20 minutes and they could leave now. In reality she told us to sod off over to the cargo depot, go outside and smoke and she would contact me on the radio when we were needed. It worked a treat and the others need never know.
Oh, and on the way back after finishing the 2 flights, we repossessed about 40 chocks from BA, but that's another story.