Same thing happens in Multi-Player Stroke Play - if one person disconnects it often leaves the rest of the players STRANDED with a spinning "LOADING" icon or a "Disconnected" message for the departed player - with no way for the rest of us to continue.
It destroys the experience and it is the main reason I rarely play those games - which is a shame - I'd like to be able to play them - but you never know if a great game will be suddenly ruined by this. (NOTE: No way to tell if the person has had a "Connection Problem" OR if they have intentionally exited.)
Thanks, AC