Like MNpurple said if he saw you then no chance will you get another crack at him in that stand.I would change locations if he saw you.If you were able to keep from being seen then you will see him again robably tomorrow.Did you pattern this buck?If you did then he should still be on his feeding pattern and like we said if he didnt see you or wind you then he will be there again in the same old routine until the pre rut begins.
If there is any possibiltiy that he saw I would chnage my stand location to another route that he travels.If this was between his bedding and feeding area then find the next shortest route between the 2 and hang it there.