Does this violate chess.com etiquette?

I'm playing a 30 minute live game. I have them mated in two, with 25 seconds on my timer. They have 25 minutes.

One move away from checkmate, they disconnected. What do I do now? Just sit here, waiting, making sure they don't return and run out the clock? 

It's a real shame. I'm new to chess, so my goal was to beat someone higher than 1300 this weekend. Kind of a sad way to end it. 

Edit:
I noticed that he got kicked after a couple minutes, and it told me he "may have violated our Fair Play policy".  That kind of answers my question, but what's likely to happen here?

On second thought, with that pawn there, it looks like a mate in two. I didn't know you could premove in live chess.

I think in all live chess matches a disconnected player only has 2 minutes to reconnect.

I don't really care if my opponent ragequits, but at least have the decency to resign first before throwing your computer through the window.

So no, this is not really nice.

                          Proper chess.com etiquette is to keep insults down to one a month for all members and staff.