Already happened, one of them forgot to turn of the mic and got killed in an emergency, daph was already guaranteed as second killer so she ran and killed toast.
Fuslie is getting better as an imposter. If she can switch her thought process from "don't look sus" to "be sus about other people like she would as a crewmember" then she would be able to challenge toast.
Everyone has a plan, until you see a juicy new player ripe for picking (snapping their neck) and you press the big red kill button. Little do you know, Toast comes up behind the dead body, reports the body and says you are the killer, everyone goes "GOOD ENOUGH FOR ME" and you lose instantly.
