This is one of the more annoying things about working with Sublime Text. I use the SFTP plugin and often right-click files in the files column to upload them via FTP. When I’ve done that, I have to close the file since it opened automatically. It’s worse when I choose “Delete local and remote files” in SFTP, in which case I also get a “This file has changed” dialogue I have to get rid of. 
There’s gotta be a setting to not auto-open certain file types right?