just climb down like you normally would and walk away at a normal walking pace,, they will spook but just ignore them and keep walking and to them your just another human passing thru... when I see deer off to the side of roads and trails I just act like I dont care and walk away like anyone else would and almost all the time they just watch me carefully and let me walk right by as long as they are a safe distance maybe minimum 40yds,,,,,,, my deer are mostly urban type deer though that see their fair share of mtn bikers, hikers, dog walkers, hunters scouting, ect..
in Maryland the guide asked me to bring a few walks and then throw them at the deer (or bear) and the deer will get nervous and walk off.