The guard was not injured.
Police prosecutor Sergeant Garry Wilson said Woods pushed the guard after jumping over the reception desk.
"He said he just wanted to see his brother."
Judge Peter Hobbs said plenty of other people had been in similar situations and didn't behave as Woods had. "When you were challenged by a security guard, you pushed him with both hands to the chest ... You were eventually restrained."
He said it would have been a difficult situation for Woods but hospital staff were also working under extremely difficult circumstances.
"I understand entirely what you [Mr Hard] say about the stress Mr Woods would have been under."
Mr Hobbs convicted and sentenced Woods to 40 hours' community work.