Yes, I do know: Unsubscribing from steam workshop contend does not tell steam to back off in the case of that thing (I like steam, but this is kinda annoying). Instead, steam thinks that you do not like that mod and deaktivates it when checking for new workshop stuff to download. Starting SKSE (if you have it) should work around that, as the launcher is not included. I yet have to find a way to set mods from Subscribed: "No" to " ". The later means that steam does not involve itself in that mod.