How can a person miss 6 turns and still be in a game?

I am playing Midguard (#13075375) and Yellow missed the first 3 turns and was booted....we are on about turn 14, the game is not in question anymore but Blue has missed 6 turns (though not 3 in a row, and we only have 4 players).
I believe he is trying to use this as a way to get deferred troops (though it won't matter). Is there some rule or program I don't know about? Check it out PLEASE because I am sure at a loss, especially since Yellow missed 3 and was booted.
I believe he is trying to use this as a way to get deferred troops (though it won't matter). Is there some rule or program I don't know about? Check it out PLEASE because I am sure at a loss, especially since Yellow missed 3 and was booted.
