What happened to me on Mario Kart Wii Online?

I had just finished a race online on Nintendo WFC on Mario kart wii and I voted for the next course like normal. Then. the computer chose N64 DK Jungle Parkway and the race started. I saw the other ten people in the race behind me right before the countdown started. I was in first place and hit an item box immediately. About five seconds into the race I dropped my item, (a fake item box) and my Mii cheered like he does when someone hits my item. As I continued, I went up the ramp that launches you across the water, and I glanced at the map on the side. It showed only my player and one other player Then, it flashed FINISH across my screen as I landed from the ramp. It said "The rankings have been determined so the race has ended". The ranks came up as they usually do at the end of the race and it showed all eleven players!!!!! It had times on the side and the points were distributed. I was shown in first place. This race only lasted about 15 seconds! What happened?!?!