Just ridiculous. Whilst anyone making "jokes" like this actually in an airport can reasonably expect to get dealt with firmly, if this chap has the money or if a legal firm stumps-up to get a bit of publicity, then I would suggest it's taken to court. I think his ban would be overturned very quickly and set some precedence for this sort of incident.
Having said that, banned from Doncaster? Possibly not that onerous..
