Is there anyway to tone this down. The movement sway is making me feel quite nauseous.

I'd also suggest you make FOV a bit wider as well. It feels cramped.

No way to disable it at this time. This is mostly due to the camera actually being strapped onto the character's head. You can minimize it, however, by leveling out your aim vertically while moving.

We'll take a look at adding an option to increase FOV of your agents. We set it on the low end because it lets you get a better view at far away things. People with small screens might have a very hard time seeing enemies otherwise.