Ported back after snowballing/My entire team dc'ed and enemy didn't

I recorded a clip of my trying to go in and stun Teemo as Pantheon and somehow got ported back. https://my.mixtape.moe/hjahvs.webm

In a different ARAM game where I played as Kog'Maw, my other 4 teammates disconnected at the same time. I disconnected shortly after. Don't know if it was a ddos or not. Was wondering if someone could look into it since I didn't have time to report it after. Couldn't record a clip as well because the replay freezes around that period.