If you're curious about whether there is any chance of further fermentation, you can try a force-ferment test. Take a large enough sample to fill your hydrometer jar and pitch a packet of Nottingham in it. Keep it warm (put it on a stir plate if you have one), and check the gravity after several days. If the gravity doesn't change with that huge load of yeast in it, you can be very sure that you are at terminal gravity.
I agree with the others in this thread that you are most likely at terminal gravity and further aeration would not be a good idea at this point. Warming it up and rousing the yeast may do something, but the force-ferment test can let you know for sure if there is any chance.
One final thought about this is that I have had beers that I thought finished too sweet and those turned out to be some amazing beers after a long period of aging. Your beer is at 9.3% ABV right now, so it should have no problem lasting several years in the bottle. If you are bottle conditioning the beer, I highly recommend pitching some fresh yeast at bottling. I've had big beers fail to condition because the yeast were too worn out, and a pack of dry yeast is cheap insurance to avoid that situation.