Did me and my premade fall victim to drophacking?

We were in a normal game. I was playing {{champion:11}} and she was playing {{champion:350}}. At around 34 minutes in the game, I went to check Baron Nashor and suddenly myself and my premade were both completely kicked out of the game and now there's absolutely no record of the game in either of our match histories. We could still communicate with each other using whispers and could still use the client but we were completely removed from the in progress game and could not reconnect to it.
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