As a person who was actually there to see it live, I'd like to point out that my problem with the solo wasn't that it sucked. It's that DM strutted out like the egotist that he is, as if he were going to knock us all on our asses with his mastery. You can't see his smug grinning in the video, but the arrogance was palpable. If you're going to be that full of yourself, and you fall that flat, you can damn sure expect to get crucified for it.
Though to be fair, the whole thing was honestly something of a train wreck.