First post here...just got back from my first trip to the area just a couple days ago and had posted the following on TripAdvisor before before pointed here:
Major construction equipment on beach at Eastern Lake... - Seagrove Beach Forum - TripAdvisor
Granted, I don't know much about the area but I have a hard time believing they were simply removing man-made berms. It sure didn't look like that.
It was a massive operating and nobody, including one of the truck operators, seemed to know what was going on. Several homeowners we met in our area were furious. One seemed so angered by the possibility that someone (controversial I gather) who owns generally unbuildable lots on the beach was starting to build that he excused himself to run in and make a phone call.
Perhaps this is naive but, if it was something as simple as removing man-made berms, it seems like an odd time to do it. They basically shut down a huge stretch of beach in the middle of one of the busiest Spring Break weeks of the year. Even if you tried to deal with diesel smell and the sight of the gigantic trucks, eventually the noise essentially evacuated the beach.
It was sad.