Is the fight hectic? Absolutely it is. If I were a healer, I would probably hate it with a passion, having to heal that stupid debuff off of people and deal with some ridiculously high damage spikes. If I were a DPSer, I'd probably loathe having to throttle my damage for 90% of the fight then go for broke for the tendons, being sure to line up my cooldowns and consumables and trinkets. And dealing with the Fiery Grip is an exercise in doing exactly what you have never learned how to do as a damage dealer, not killing things.
But as a tank? Especially one kiting bloods up and down the spine? It's glorious. It's hard, really really hard. As the fight progresses, the difficulty of tanking the bloods goes from Meh, I can do this while I eat this giant hoagie to There are 50 bloods chasing me help help. You will use every cooldown, big and small, as well as every movement increase you have. You will shift from tanking one or two bloods to tanking 10 or 20, and finally you will find yourself drowning in the things, hopping around the back of the spine and desperately hoping for a cooldown to come up. And it's awesome. It is the most fun I've had in Cataclysm, bar none.