I want to +1 this, cause the exact same thing happened to me a few weeks ago. My friends and I were playing on a LAN (four of us), along with another random player we got matched with. We had a healthy lead on the other team, when all of a sudden our clients crashed at the same time. We thought maybe it was something on our network, but the random player on our team also crashed, and there was no problem with our internet or connection.
By the time we logged back in, the other team had all points and was about to win. It seemed fishy to me since the crash was completely one-sided, but I didn’t think to take a screenshot or log the IP at the time.