VX ACE: TURNING IN PLACE?

I'm running into a problem that seems like it ought to be incredibly simple to overcome. I need my player to be able to turn in place. I tried what seemed like the obvious solution to me: a parallel process that says if (some unassigned key) is being pressed, then if left is being pressed, turn left, if right is being pressed, turn right, etc. This doesn't work (maybe because of a split second break from the conditional when the pp recycles?) I found one script that allows you to turn instead of move when you tap rather than hold the direction key, but it's a bit glitchy and the delay before actual movement isn't going to work for me anyway. (I'm making my own in-map combat instead of using the standard battle system, so immediate response to commands is a must.)

Any ideas? I have no idea how to write script.