Nah, you're fine Lyco.
And to answer your question, Mike, I mean like with what I said about asking for a status report- IE, doing a roll call to make sure everyone is still there to even turn in the sheets in the first place. If they respond, then they get a reminder about turning sheets in. If there's no response whatsoever in the thread within a few days tops, then they're kicked unless they manage to show up with a good explanation and can guarantee their participation (through the slots would be treated as open, so if they come back too late, then unfortunately that's just how it is).
Also, being stricter with getting the sheets in. IE, if the GM says there's a deadline, unless you have a situation like mine where you're pretty much done anyway and were just waiting on everyone else, if you don't have a sheet in, you're out unless you can produce one before all the slots get filled again.
Does that all make sense?