Ranked Soloqueue Pentaqueue

So this just happened:

Went into the game mode selection screen, noticed it says Ranked Solo and Ranked Party. Click the Ranked Party option, invite 4 friends. wat? 2:30 in, we find a game. Go through champ selection, in loading screen it is not a ranked 5s. In fact, the members of my game aren't even all in one team. Check lolnexus, and apparently it's ranked solo queue with 5 members premade on our team and 5 members premade on their team. Their team is as confused as we are.

Fast forward to end of game, we win the game. The place in the after-game screen where wins and losses are displaced shows 1-0. Wat? Check my league, no LP gained. Check match history, says ranked game. Check my ranked teams, no LP gained. Check lolking, apparently it's a "Ranked Premade 5v5". Confused as all hell now.

Some screenshots:

Champ select: http://i.imgur.com/tyr31IM.jpg

Post-Game Screen: http://i.imgur.com/f3ZFPw6.jpg

So apparently we won on a non-existent ranked team? Or a new queue? WTF?