Well, firstly try to contact the person who made the spot. He or she can change it.

If that does not work you can make a pick-question with different images you think are appropriate. Let people choose which one they like better. When you have the winner upload the picture in the image section of the spot.
Then send a message to one of the Fanpop 4 (they are Michael, Papa, Dave and Cliff) with your request to change the picture and the link to were you posted the picture that won the fan-pick.

The fanpop 4 should be able to help you with this, however they are very busy with other things on this site so it may take a while.

Hope this helps.