I would bet, though I don't know, that setDir and animations don't get along. Try setDir first, to get them facing the right way, then do the animation.
The other thing about setDir is that it happens in one instant in time. As soon as the AI unit has done it, it will go on to do whatever is next. You might need a doStop command to make them keep still before going on to the animation.
As to the correct animation, I have no idea. Hopefully somebody will happen past and give you a tip, but failing that all you can do is test lots until you find the one you want. There is a complete list (as far as I know) in the Ed Depot, under Pending.