Check out Cory "Human Pogo Stick" Jefferson throwing down a dunk over Patrick Patterson from 7 angles. If you are one of those anal & annoying few who said Dwight Howard's Superman dunk and Blake Griffin's dunk over Mozgov weren't actually dunks because he didn't touch the rim then I guess you will say this wasn't a dunk either.
In my book it's a dunk, a nasty dunk, a dunk so nasty it made the announcer hit puberty (0:21 mark).