I've been saying he's past his best for a while. Making mistakes commentating is one thing, but at the British Champs at Abergavenny a few years ago he had a go at the spectators from the podium. There was some confusion, arising from the commissaires, as to whether Lizzie Armitstead won a senior medal (she was 2nd or 3rd in the race, but 1st U-23). Not Hugh's fault, but he appeared to take the murmur of discontent directed at the BC organisation personally and made a brief verbal attack. Not nice.
Still, I don't like to see him go when he still has such an obvious enthusiasm for the sport.