I notice your field of view is not completely stuffed by default. Has something changed in a patch to automatically handle aspect ratios other than 4:3 or have you been playing with configs to alter it? I know there's a command to manually increase/decrease FoV but it's still based around a 4:3 AR and so the natural consequence is that you get Vert-, which is disorienting and gives me headaches. True widescreen support would be Hor+ only and yours doesn't look too far off that in the clip you posted, but it's hard to be sure based on a small YouTube video.
EDIT: Just gave it another crack. Clearly nothing was changed in a patch, it's still Vert- and horrible to look at. Yours still looks better than mine, so I'm curious if you've found a config setting somewhere that I haven't? Or maybe yours is still Vert- and you're being conservative on how far back you zoom it?