Oh I hope that dog is okay. Yes it is scary how fast it can go. I actually had a close call with one of my danes years ago. She didnt act right and I straight away thought of bloat, so took her to our vet. and they x-rayed and said they saw gas and there was a risk of turning. I let them keep her to make sure she was okay, but she wasnt doing any better the next morning, so to not take any risks we went ahead and did the surgery before she had a bad case of bloat.
One thing that is funny, is how they changed the elevated dish issue, a few years back. Before then they said it was real important to feed from elevated. Also like you said no running around before or after meal. Something I have heard can trigger is stress, but still I am sure it has a lot to do with genetics, some lines tend to have more problems with it than others. And the deep chested breeds have bigger problems than others.
Something that I thought was interesting was a study about bloat I read. They said that 80% of all dogs that come in to the vet with bloat have an empty stomach. And if you think about it, that makes sense. They have always said that one reason they get bloat is that, they eat a lot, maybe too much each meal, so their stomachs get heavy, this makes the muscles that "hang up" the stomach strech out and when the stomach shrink the muscles get slack.
In Sweden where I come from, most people feed their giant breed dogs three times a day, here it seems to be most common to feed two. Since I am used to the three times a day, I have stuck to that, and well I also keep my fingers crossed and try to keep myself fairly updated on whats new in the bloat discussion. But it changes so often, it is hard to know what to do sometimes.
Marit