I'd agree but since all Sam had to go on was the last knock down drag out fight which ended in him being called a monster and almost strangling his brother followed up by the you're a monster i'll kill you phonecall why would he stop just hearing Dean's voice. I agree Ruby played Sam hook line and sinker but all of them thought killing Lilleth would stop the final seal being broken so I wasn't going mad at him about that at all. Each to their own opinion I was mad when Dean punched him but a lot of people were all 'meh he deserved it' well neither gets a pass from me, they both made a lot of mistakes this season it's high time they learned that when they fight together the evil of the world trembles when they're apart the world itself falls down.