When you Mindweaver something it follows the last order even if the mind control effect wears off, sooo you can just put the thing you controlled on "Hold" and it will not move, even after attacking with its ranged, or at least that's what the test in the forge shown.
To replicate, just throw down a Mindweaver, the creature I used was a Stonekin Rageflame, once the Rageflame got in mind control range you just mind control, and click F and when it comes back to being a bad guy, he just stands there, and lets the Mindweavers attack him without fighting back. even if you have someone run in