I don't use Unity, so I'm a little out of my depth here. This article might explain what it does, though:
If you don't like this, you can uninstall it with:
sudo apt-get remove unity-scope-video-remote
Regarding netstat, what do you mean by "it raised too many suspicions"? It is a standard tool on all Unix installations, and I'd strongly recommend against uninstalling it in most cases. See https://en.wikipedia.org/wiki/Netstat
for more information on it.
On the TCP connection, CLOSE_WAIT represents waiting for a connection termination request acknowledgment from the remote TCP, i.e. your machine has requested that the connection be closed, and is waiting for the remote server (Canonical) to acknowledge this. A SYN flag must have been set on earlier packets to establish the connection first.
I hope this makes sense....