I think it's a harsh penalty but not a joke by any means.
The guy was on the floor injured, moving him with any malintent or not might of made him a paraplegic for the rest of his life. He is not a trained medical proffesional and shouldnt of touched him.
The message is clear for anyone that touching an injured player will get you a ban.
What is a joke is that Gale managed to get his lumped into one penalty and got away with 5 games!