Yes, I can see something like that happening. I think maybe the Dingles will agree not to tell anyone for Sam's sake (not easy to admit that you've been a victim of domestic abuse and certainly not for men, as that isn't talked about as much.) Either that or whoever finds out agrees that Rachel should be allowed to get off free provided she stays away from Sam. Maybe they think that she is the lesser of two evils where Archie is concerned.
Poor Archie