I have to agree.A shame I had to get to post 20 to find someone speaking a little sense.
The man tailgated and pushed the member of staff over, then picked up his bag and left.
You don't go to prison for that.
I hope the member of staff makes a full recovery - they seem very unfortunate to have picked up such a serious injury from simply being pushed to the ground.
For violent crimes, it takes a lot to get jailed; even almost killing someone in a deliberate attack may not result in jail time! Someone I know (not sure what he is doing now but he was doing on-board catering for TPE a couple of years ago) was incredibly lucky after very nearly being killed by a local thug; the thug committed loads of attacks against people without much punishment before he was finally locked up for a short time (he then got out again, carried out further attacks, was put inside again... and no doubt there will be many more victims to come).