I don''t think it was. I stayed at FLD from Tue through Thur. There were plenty of times GAC and GAP at OSH were full so a lot of people went elsewhere. I think that kept the OSH arrivals down to where I don't think the FLD diversion was used.
edit: OK, it was a couple days before I arrived.
I didn't get a good look at FLD from the air when I landed, I was too busy. But on the ground, it looked like several hundred planes on the parking side of the rwy. Way more than on the camping side where I was.