To "let sleeping dogs lie" is to avoid restarting old conflicts. Revisiting an old conflict is like waking a sleeping dog; Queens Crap, Bob Holden, Christina Wilkenson and Tony Nunziato are too stupid to let the patriot pooch snooze on the cyber porch.
Don't poke the Henry bear because this could have devastating results. The bear could bite Holden's scrawny ass, or Christina's enormous ass, or Ed's saggy ass, or Tony's pompous ass!
Don't wake the sleeping tiger. Look what happened to the Japanese when they attacked Pearl Harbor and woke up the United States. The bombs are coming Crappy and Bob, Christina, Ed and Tony better start walking the streets with steel pots on their heads.
Patrick Corleone: Just when I thought I was out, they pull me back in.
Our true enemy has revealed his face again and the war has started again.
"If an injury has to be done to a man it should be so severe that his vengeance need not be feared"