I played around with a bunch of credits in search of blooming in a darkened room. Yes my 60" blooms, too with Smart Dimming enabled, whenever I have my backlight set into the 30s and higher. It's more subtle than the flashlighting, but it's there.
The reason it doesn't bother me much and I don't really notice is because I'm currently running my backlight much lower than Ursa's and CNET's settings for night viewing. Crazy as it may sound, my favorite night backlight settings so far are in the 12-18 range, and no higher than 25. The set is inherently so bright that I still get plenty of punch at those numbers, and it keeps the flashlighting tolerable. I also get the added benefit of reducing eye strain. For daytime viewing I'm back up in the 40s and 50s for backlight.
A less punchy night-viewing picture probably won't be to most people's tastes, but so far I find that it's giving me the flexibility to enjoy the blacks afforded by local dimming without much distraction from flashlighting.
At those lower backlight settings, I am noticing that the relationship between backlight and brightness becomes much more critical (or put another way, each step up or down in brightness has a greater effect on the picture): As I lower the backlight into the low teens, the brightness needs to drop a bit along with it. At a backlight of 13, I found the most shadow detail and best blacks with a brightness of 46. At a backlight of 18, a brightness of 47 looks to be the sweet spot. As I bring the backlight back up into the 40s and 50s, the brightness sweet spot appears to level out at 49 or 50.
Just initial observations, but thought I'd share.