Being relatively young (23 - although not for the football world!), it just seems insane that this story is getting coverage. There was barely a person in my group of friends at university who hadn't had a balloon or two. A balloon was the least of your worries to be honest. I can't believe this nickname 'hippy crack' either, as if the media are trying to make some form of link between gas and crack cocaine!
I'd be more concerned if Jack had been photographed smoking a cigarette as I think that links to a much wider image and persona issue that's likely to reoccur (cough cough, Jack Wilshere).
Given the implications of a balloon filled with gas and the fact it was a year ago when he was barely on the radar and wouldn't have been thinking about his image, this is entirely unfair and a non issue and I sincerely hope nobody makes it into an issue. All the same, it's a good wake up call for him. He's in the spot light now and non issues to 95% of society become issues unfortunately. Keep your head down mate, work hard and enjoy the simple and finer things, but just not the things which the daily mail would gawk at...