Yet more reasons to dislike stopcasting. Yes, it does seem to stop all casting and it doesn't seem to matter if it's priority or steps. No idea if this is new behavior or not.

And I would still not recommend stopcasting for Rets or any melee team. Just because it doesn't have any spells to impact doesn't mean that it's not killing your DPS. Those swing timer resets add up to quite a bit of lost DPS on white hits, especially with slow speed weapons where that 3.6 speed gets reset and reset and reset to 10+ seconds.

So I guess the long and short of it is you either watch for the proc and set up a means to use it, {Video feeds in ISBoxer, region setup in HotKeyNet, addons like MSBT or HearKittyor Jamba's Proc feature, etc}, guestimate the proc and macro it into a sequence or step, or skip it altogether.