Casual Normal Game with Friends Gets Ruined [CRASH]

Hello, I just played a game as Nunu with three of my friends in which, on two separate occasions, all four of us disconnected from the game at the same time. I'm not sure if the fifth member of our team disconnected also, but each time it happened resulted in at least one free kill. The second time it occurred right before a major teamfight and all of us died as a result. By the time one of my friends could access his client again, the game had ended. I don't know how this happened since we were talking on Teamspeak the entire time and even when our games disconnected, our Teamspeak client and all other internet applications worked just fine. Not one single member of the enemy team seemed to have any sort of connection issue at all. I don't know if this was the result of something an enemy player did (as I said, the seemed very conveniently timed) or what the deal is, but I would love for someone to look into it and get back to me about what might have happened. I was enjoying the game even after the first connection ordeal, but disconnecting and having the enemy team Ace you then push down mid for the victory while you stare at a frozen screen really ruins the mood.