Its hard to say what spooked the deer. I had a doe come in tonight to my pop-up blind, 20 yards away. it was rainy and i was set up under some oak trees. a gust of wind blew a big wave of rain drops out of the leaves and on to the blind, made a whole bunch of racket. spooked the crap out of that doe, was kind of funny actually. anyway, point just being that any weird thing can spook deer.
if you did all you can to keep the scent down and they didnt appear to spot you, im sure youre good. if they smelled you, they would have been able to find you and would have looked at you in your stand. if that didnt happen, im guessing they didnt smell you.
also, youre near a corn field, thats a big deal. theyre going to be hitting the corn pretty hard this time of year. i have some areas that are dead all year long, but now that the corn is ripening, the areas are hot as hot can be with activity. besides what ever other reasons they have for using the particular area your hunting, they are likely using it because it is near the corn. i'm guessing you dont have a ton to worry about, theyre going to use that area at least until the corn is harvested. then, depending on why else they are in that area, they may or may not leave the area after the harvest. i would hunt it. keep to your routine of sneaking in and out, keep the wind in mind, and keep the scent down, all things im sure you already do. if you get in one night and they do obviously spot you, i would still hunt it, just move 30 or 40 yards so youre not in the same tree. we're creeping up on rut activity getting the bucks moving around more. i would get in there and hunt as much as possible if you want a shot at those bucks, it wont be long and they might be 2 counties over chasing does. and for now, the corn will keep them in the area. if you notice a sudden drop off in activity, i would try looking for other main routes to and from the corn field, they may just be skirting you. but if you play the wind and keep the scent down, i think you'll be good to go and keep hunting. if they obviously bust you, you may need to move a little, but if you keep getting in and out fairly undetected, you should be able to hunt it as much as you want.