After checking the connections, if the battery had any fire at all in it and there is room in the parking lot, there's a chance you could have given him a push and he could have popped the clutch in 2nd gear. Once started, he could have found a battery somewhere. If not enough fire to activate the fuel pump and spark the plugs, he wouldn't have been any worse off from pushing the bike a few yards. My brother-in-law was told by a dealer that it took something like 30-40 miles for the alternator to recharge the battery on the Harley he had.
Anyhow, problem solved. Just a thought.