I just discovered this today as well. I noticed an additional code (UA-48513475-1) on the site and poked around. I found a list of websites here: https://tools.digitalpoint.com/cookie-search?domain=movies2tv.net&page=3 and noticed that a few of them used Shareaholics. Once I disabled the plugin….the code vanished.
Bad form on their part, I didn’t see any obvious disclosures on this either.