Deer can indeed be a hazard. A big buck chasing some tail almost barreled into me last year during a night ride in mid-November. The doe ran across my path, right in front of me, and instinct (or experience) told me to slam on the brakes. I just knew a second deer was on its way.
The second deer was a huge buck. From my perspective, it looked to be the size of an elk. His rack was so big you could have hung the jersys of an entire football team on the antlers.
Had I not stopped. That big boy would have definitely slammed right into me, killing me most likely. I would not have been a welcome sight.
A man simply should not get in way of Buck trying to get himself some.