For the record, Tom Clark has been practicing for over 30 yrs, was a partner with Bill Love and Brian Ault - how took over his father Eddie Ault's practice. Also, Tom has served as President of the ASGCA. So, yes, he is reputable.
As for the green, IMHO I'm not fond of situations like this that create ruling problems. If the water hazard changes to a lateral hazard "out-of-sight", how do you know where your ball crossed the hazard line? Maybe a rules guru can eloborate.
This just causes slow-play. How would you like to have to go back to the tee and tell the group that's already been waiting on you that "excuse me, I have to re-tee". Talk about a pressure shot!