Prevent the blob from starting on the arrivals shuttle.

[Xeram]

Well It seems we've encountered people who have no damn sense already a I joined a round and the blob had started on the arrivals shuttle, set up slime launchers and was basically instantly murdering everyone who joined the round.

Grumping and homicidal urges aside, this needs to not be possible as soon as possible I think because holy shit is that shitty, like, worse than the traitors who set the damn thing on fire and bolt the doors.