So if you can replay a match over a pen call, am sure you can for an offside ?!!
There was actually a case in Germany a few years ago where the DFB ordered a match replayed after a 'phantom goal' incident. Subsequent to this incident, FIFA made it clear that this game should never have been replayed and forbade the DFB (or any other association) from ever doing the same again. Several other phantom goal incidents have occurred since, both in Germany and elsewhere (including several in the UK) but none of those games were replayed, even though video evidence clearly showed the official(s) had got the decision completely wrong.