Trusty something very similar happened to me. On the Dunker church map as Union, I went into the church aimed my rifle with bayonet fixed. Then after my aim got shakey for some reason my character unfixed his own bayonet, not sure if that was a bug, then the screen went black and white
20170609114844_1.jpg just as it did for Hal but then I tried to free look and I got transported to the sky
20170609114841_1.jpg. After alt tabing out of the game and back in I think I was shot and spawned back. the screen wasn't black and white but I was stuck in free look and couldn't move. When I pressed left-alt again this
20170609115013_1.jpg and this
20170609115028_1.jpg happened. I'm pretty sure this is one of those rare bugs that won't happen again but it's a bit of a coincidence that this happened on the same day to two people.