Shadow priests in battlegrounds.

So go ahead and accuse me of not reading patch notes. It's true, I don't. I'll figure it out as I go (thottbot, google, wowhead, etc.).But did something happen to spriests? I have always enjoyed battleground healing with my resto sham and Izabella took up well over 50% of my BG time. Other than that, warrior and DK never really caught my imagination. Enjoyed bg'ing with the hunter. Enjoyed bg'ing with the priest as disc. I tried spriesting in bg's a couple times in WOTLK but got sick of being thrashed. In fact, questing felt like running around completing tasks hoping I wouldn't get ganked. Gank a spriest anyone. Good times! Well, while leveling in Uldum (lvl 83 at the time), an 83 DK attempted to gank me. I did the usual, popped my shield, screamed, dotted him up, hit a mind blast and followed with mind flay and watched his health plummet.....what? The DK was dying! He was well below 15% health and he started to run. So what did I do? Followed him...mind spiked him twice and he was dead. Just like that. Did he suck? Maybe, but so do I. So I decided to sign up for a BG. And you know what happened? It was awesome. I was dealing death like Thanatos himself. DOT's here, mind spikes there, here a scream, there a horror....close to top in damage at the end. My god....are spriests viable in BG's?!?! For me anyway....yes. I have been having a blast in BG's with my spriest! Kicking butt pretty well I might add. So were spriests great for BG's before? DId I just suck and now doing it right? Or have spriests been fixed and they're now BG powerhouses?