Keith,
I know nothing about Wiviott. I've never cooked fall-off-the-bone ribs that were also too greasy. Does this method involve foil?
I, too, have been suckered by grocery-store-sale ribs. I have a rule -- if the ribs are the regular stock that I'm familiar with, I'll buy them on sale. If they are a special "sale" item, I'll pass.
I've never cooked the "juiced" ribs. Maybe I'm a snob, but I just don't want them. I'd rather have the skinny "sale" ribs.
D