You can call it close, but 8800lbs on the axles computes to roughly 800-1,000lbs on the hitch, so you're not over 9,000lbs unless someone put rocks in your storage compartments. I suspect that hub/bearing was not serviced properly leading to failure.
--2005 F350 Superduty Crewcab, 6.0, 4wd, short bed, 3.73 gears;
--2016 Montana 3711FL, 40'
--2014 Wildcat 327CK, 38' SOLD