Assuming you don't mind, key-down and key-up actions, a guy on isboxer.com has a keymap for IWT (down key) and then (up key) to break the follow with move backwards. If you don't like down/up actions, just make it two distinct presses. It is a two step keymap, either way.

Step 1, sends IWT to each client.
Step 2, sends Down Arrow (move backwards) to each client.

The Keymap as posted in key down and key up.
The interesting aspect is this:
a) Your team is fear bombed or you use a spread out macro to run different directions.
b) You want to face a target in the middle.
c) Press the key, for IWT.
d) Continue to hold the key down, and your toons continue to run.
e) Release the key, which sends Step 2, breaking the run towards the target; or keypress 2, if you don't like down/up stuff.

I'd probably put "window current", run Control Keymap "FTL Assist Me", at the start.
That way, all the other guys will IWT to your current target, regardless of who they were targeting.




Zanthor: That's pretty close, against the stationary target, IWT doesn't seem to reset the swing timer at all.