Continuous running of other toons

[Khatovar]

Don't spam IWT and as JohnGabriel says, stop the movement then follow or IWT again.

I'm guessing that you use the constant IWT spam most people use in ISBoxer. I'd suggest using that only for PvP. I only PvE and use a manual IWT with micro-movement in the DPS rotation to stop any potential runaways. I can't remember the last time I saw a runaway.

There's also a section here in the first Newbie's Guide on dealing with Runaways.