Did WOG get buffed?

I hadn't seen anything about it, and I'd assume that I would if it had been hotfixed, but for the past few nights of raiding and 5-mans I've seen astoundingly high WOG crits (once as high as 75k, frequently 50+) with no obvious source of a healing modifier. I don't think it's Vengeance, both because from what I understand WOG doesn't scale with it, and because I was typically Vengeance-capped most of the time anyhow and never saw more than a 25-30k crit.

Shhh, now blizzard is going to know about it.

It DOES scale with AP from vengeance.
And as WoG scales linear with holy power, it heals for about 10k for each holypower.
So most of the times it heals for about 30k.
Its been around 30k noncritts with 3x holy power for ages.
What your experiencing is most likely the healing buff blizzard implemented in 4.2 that all healing critical effects heal for 200% instead of 150%.
Thats why 75k critts isnt to uncommon.

I was always the one that still used shield ot R instead of using WoG. But, I always used WoG when things got hairy. Just a little way to help out the healer. Plus I liked seeing a crit from the shield that hit for 30k in damage as opposed to a green number.