There's a thread about Luke in the opinions section where i've put across my feelings on the situation. As far as i've heard he won't be returning to football and has been studying a totally different path.
There are various players that play football that have committed all sorts of crimes, with perhaps more "purpose" so to speak to cause havoc due to their not so nice character. But some football fans (it will probably ironically be the "nutter" element) can't distinguish between these nice characters who have made an awful awful mistake, or these characters who are "bad" who keep making mistakes but are just lucky that they haven't had as tragic a consequence as Luke has. That's life in every walks of life, so the moral of the story should be portrayed quite easily in an advert of some sort - I know there are drink driving ads around christmas but they should also be around generally and include the element of tiredness which is often just shrugged off, AND also for people who go out, get drunk, get little sleep and then wake up for work the next morning/or whatever the morning journey may be - many many many many people across the country have done this and I guarantee you if they were stopped by the police they'd be so over the limit it would be alarming.
So my point is if Luke returned he would get a reaction far more abusive (and there would also be security/logistic issues behind the goals) than the likes of King, Hughes, Pennant, but i'm fairly sure he won't be returning in the first place.