golf club fitting on AP1 714s

went to a demo day in Fairfield oh. Im confused as the told me my irons needed to be 1 or 2 degree upright and 1/2 taken off. Im 5'9 and just confused at the terminology. I thought if you cut them down 1/2 inch that would make them flatter.Im confused so can someone please help me. I was thinking I would just order them 1/4 inch shorter. Can someone give me some input how even if I just ordered these irons 1/4 inch shorter what impact will that have on my clubs. please all input would greatly be appreciated!! Im afraid to make to many drastic changes then worry nothing could ever be reversed or corrected down the road. Help please!!

Were you fit by an authorized/professional Titleist fitter?