They have you go into spectate so you have a 3rd person view of another player. this way they can check for glow skins. sometimes when a Forced screen shot is takeing (esp in a set of 3 SS) they dont get exacully what they want while you trying to play. Sometimes a forced SS in the game will not show any other players, smoke, trees, ect. This way they will be able to see if the person your spectateing is glowing or not. Most of the time they are takein random just to keep all in check. Or somebody is new to foresite and want to play a bit.. lol
Hope this helps Cobra.
Brother B