Well, I think he isn't necessarily snubbing you but fears that you might OUT him and just doesn't know what to say or do about his situation.
Yeah, this was my first thought too.
Funny story. When I was married, my wife was a healthcare recruiter. She had recruited this guy for the local hospital and he came into town for a visit. We, being inactive at the time, took him to a few local bars and he proceeded to get loaded and talk about picking up women, and how loose were the chicks in this town, etc.
Well he took the job. A few months later, we made the Memorial (at least we still did that) and lo and behold, who was one of the ushers? This guy. He took one look at us and about dropped over from fright. He didn't say two words to us that night because I'm sure he wanted to put as much distance between his actions and us as possible.
Basically, Richard and David are typical weak witnesses - they rationalize that anything they do is o.k., because even though they are weak they at least still believe. My friends that give me such a hard time about being an 'apostate' drink too much, have many family issues, visit strip bars, smoke pot, but they have the nerve to tell me that I'm SO WRONG!!! Typical JW hypocrisy......