15" Retina MacBook Display Issue

I was experiencing ghosting on my macbook pro display for quite some time, so I ended up taking it to the Apple store about a month ago. They said to send it to the depot to get repaired, and everything else would be checked out as well. The top case with battery was replaced, as well as the entire display clamshell.

Things seemed to be going great since the repair, then a couple times now, the screen brightness would suddenly change in the slightest, and what happens next I've never seen before. It looks like a really horrible backlight in the display. My screen looks perfect normally, then when this happens, I can't tell if it is a software issue that is making the screen light like this temporarily, or if this is indeed another issue hardware wise.

I'm attaching a picture so that you can see what I am talking about. I live 2 hours away from the local apple store. Any feedback would be greatly appreciated! I want to find out whether or not I need to send this computer in for a repair again, or not.