This happened to me twice in the same game. I had to kill the process and restart the game. After the second time, I started the game in safe-mode in order to allow myself to complete the game. Could not switch to the minimap or tab to see the players. I could control the ship and shoot but that's it. This has occurred to me a couple of times in the past. I'll try to see if I can "re-attach" the camera if it occurs again.