There's a lot of wrong info here, sorry.
First off, you are using too many skills. It is more efficient to specialise. You're trying too many things at once.
Very early on I recommend Contagion + Essence Drain with Pierce + Controlled Destruction, until you obtain SRS.
Snipers are bad. Take Arsonist. I recommend Magnified Effect + Scattershot for more overlapping AoEs that can multihit targets and clear packs in 2-3 seconds.
Arsonists are you main carries, even over SRS, and should be prioritised for Jeweled Orb as well.
Put Fire Infusion and Martial Tempo on your SRS, then replace Martial Tempo with Feeding Frenzy once you can.
Why you decided to use spirit gems on Unearth and Bonecage when your SRS is sitting at 1 is beyond me.
For Flame Wall, Arcane Tempo + Fortress or Arcane Tempo + Inspiration are most efficient.
Flame Wall + SRS spam (especially with Arsonists) wants to clear stuff quickly. Bothering with all of the extra stuff shows me you aren't exactly sure what you want with this, or what it's supposed to do.
And your title is wrong too. Nothing about this was nerfed.
What they nerfed is the Cast on Minion Death interaction giving you an afk loop.
You could Feeding Frenzy + Minion Instability on popping SRS, triggering CoMD, triggering Flame Wall, triggering SRS.
If you want to see this done properly, please check this out: https://www.youtube.com/watch?v=Kl5SyQgLtRk
I'm sorry, but your "guide" is all over the place, and I recommend trying out a bit more before publishing "guides".