Here are some numbers for you all from the DOE website:
Date Percent of GOM Oil Shut-in
September 7 57.37
September 8 60.12
An almost 3% of the total jump from Wednesday to Thursday. Which means that either something interesting is going on, or the numbers thus far aren't exactly reliable. (And about 2% jump from Tuesday).
That could be pipeline work. They get the platform up and start to pump, but then take it back down to work on the line. Looks like my analyst's 57% was a pretty good number...