It turns out, it was an accident.
Because the NBA releases the details of which media member or broadcaster voted for which player, there's a level of accountability introduced to the proceedings that wasn't always there. That's a good thing.
It also helps keep our faith in the voting process. While it's annoying that Al McCoy made a mistake voting, at least he didn't actually think Lee was deserving of a vote (unless he's simply saying it was a mistake now that everyone's pointed out how wrong it was).
There is also a strong belief around basketball Twitter that Hubie Brown probably made a mistake in voting for Danny Granger, who would have appeared right next to the more-justifiable Danny Green on the ballot.
As for the other inexplicable votes? Well, here's who voted for them. You'll have to ask the voters yourself.
James Harden - Stephanie Ready, SportSouth; Kevin Calabro, ESPN Radio
DeMar DeRozan - Brian Davis, Fox Sports Oklahoma
Michael Carter-Williams - Spero Dedes, MSG Network
Monta Ellis - Dwain Price, Ft. Worth Star Telegram