Definitely don’t spam coil while stunned. You’ll want to wait until it wears off completely and watch the rogue for the shadow reflect. A good rogue will pop right before the stun wears off by a fraction of a second.
Spamming DC is a noob mistake, friend. You’ll DC yourself.
If you see the reflector up and could use a HS - use it, pop an immo, wait for the counter. Shadow will still be up. You’ve got to live 5 whole seconds for that reflector to wear off.
If you’ve got a nade, that’s another option.
Don’t forget demons can be controlled independently from the Warlock in Vanilla. You can use their abilities while CC’d like using devour magic on the felhunter to get rid of a poly, fear, etc.
Shadow Mastery/Demonic Sacrifice is basically the only sac build for pvp I can think of…
Pet sacrifice and going down the destro tree for just ruin is the pve build, and atrocious for pvp because you give up way too much extra utility for that extra 5% on shadow bolt (which is fine for pve, but hurts in pvp)…
I suppose you could hypothetically make some kind of pure fire demo sac build, with some pretty nutty modifiers on searing pain… Even so, you’d probably be better with a deep destro fire build and 5 points into the imp buffing talents