Unfortunatly, we can't control/handle mod shop menu's. If the player is viewing the modshop menu and the next race starts, he'll be synced inside the modshop.
Fix: Ummm. We can detect if the player is in a modshop though, because of the fix for all players to enter a modshop that I coded.
Maybe send player to stunt, if he is in modshop. Yeh that'll work nicely.