Sorry but guardian doesn't have such talent. Though guardian spec has much better ability Faerie Fire which is surprisingly not used in that fight at all. Also I didn't quite understand why feral uses only moonfire not shred/rake/bite or any other single target abilities in that fight
//Edit: Sorry if I seem to be rude. I don't mean it. I just think that usually the best solution is the easiest one
Good morning to you!
I have to say that nothing about the horror that is the Spine of Deathwing fight is easy. This fight is one of the reasons why my Dragon Soul profile is (to my knowledge) the only full clear profile available for this raid. And I lost quite a few hairs on my head designing this thing.

With this encounter, aiming for fast kill speed was not an option. The primary design goal is to get it to work. And I did the initial development with rogues and a feral druids, so those are really tested well. Another challenge in developing raid profiles is that you get one kill per character and per week. You have no idea how many times I frantically stopped the bot to jump off the back, because I needed to avoid the kill. Then I had to run back and start all over. With code changes I could get in 2-3 attempts an hour after the base code was complete.
The challenge with Spine of Deathwing is the movement rhythm. If you don't constantly move back and forth, you get thrown off the back. No combat routine (especially not Singular) was honoring the fact that I disabled certain capabilities to get it to stay in the two spots next to the wall. I don't know if you have regularly done the Spine fight manually, but most players are not even able to it by themselves. I myself, who spent over 100 hours designing that single encounter, have a tough time doing it manually, because it is such an annoying encounter. What I had to do is to disable the combat routine completely (because not doing it would always break the fight) and create my own mini-version with limited abilities. You can probably understand that it is not reasonable to create a complete combat routine for 2-3 custom encounters in a profile pack for all 11 classes. From that perspective, it is indeed reasonable that this fight takes a bit longer. The script tries to play it safe.
If you are one of the very few people that can do this encounter manually, then you can probably also do it faster.
For the other great majority this thing seems to work quite very well, because it is a tossup between a 7-10 minute fight and not killing it the boss at all. ;-)
I added things like moonfire/wrath to melee druids, because there was a strong possibility of them being thrown off if they moved into melee range of one of the Corruptions to kill them. The movement rhythm to keep them alive would have been broken. The following list contains the skills that a melee druids use. Of course they are all tied to certain conditions like current health, current number of bloods alive, buffs etc. I always use the high damage attacks against the tendons so we can get them killed with the limited amount of attacks available once Deathwing pops the hood.
Feral Druid: Healing Touch, Swipe (with too many bloods alive), Rejuvenation, Cat Form, Ferocious Bite, Shred, Moonfire, normal Moonfire, Wrath.
Guardian Druid: Frenzied Regeneration, Rejuvenation, Bear Form, Mangle, Lacerate, Moonfire, Wrath
You are right in that Guardian druids do not use Faerie Fire and don't have Lunar Inspiration. I will see to it that I add Faerie Fire when I do my profile overhaul, where I also add the stat and talent switches.
If you feel the bot is not using one of the skills I have listed for you here, then I would need to see a log (
Guide: How to Attach your Log).