If Emma, Jason or Victor (or anyone else) is deemed to have broken the rules, then they should be reprimanded. If that means eviction then so be it, even though I think it would be better entertainment to keep them in.
If housemates feel unsafe with each other, then keep the bodyguard(s) in the house too.
The eviction of Vanessa (or, if pigs start flying in to vote, Dan) on Friday is part of the game, which should continue "as normal". There is no reason why the stages of the game should be thrown off-course by the events of last night.
xx