Nope don't worry about the snort but I would be more careful when scouting to limit pressure you may put on the deer. Spotting scope and binos from a safe, hidden location would be my suggestion.
If he stomped or pawed his hoof, he was making a direct challenge to you.
Deer often stamp their front feet when alarmed to alert other deer of danger. The foot stomp may also be used to try to startle a predator and causing it to move or the deer to assess the object. The excess interdigital scent left on the ground during the foot stomp may also tell other deer that a deer felt endangered in the area where the scent was left.