Interestingly enough, it may or may not be gone. We already have an instance of people speccing HOLY, and getting the 10 points in the Disc tree required to get stronger and 1-sec shields, then spamming, becoming the newest highest HPS HPriest on WoL. I'd refer you to this thread on Plus Heal: http://plusheal.com/viewtopic.php?f=4&t=9148
It seems that, even without Rapture, it's possible. We'll just have to see if it STAYS possible, or maybe that was just a fluke? I don't really know, I didn't look really carefully at the logs, but it's a possibility that we may have to consider.