The guy looks in his 40s..

His hand looks as the same as the episode of kidnap in a barn when we see RJ drinkin tea..

Absent from scene during mass murder of Bosco's team

Immediate leak of info when something was known only PJ and Lisbon as discussed in office and someone who can easily take Wainwright from office

It would be a big turn off if it turns out him though.. A smart killer like RJ spending half of his day in CBI office just to monitor what these folks are doing.. RJ seems like a man who likes to kill around and enjoy life as well... Ron has to do office chores everyday.. RJ's character demands him living a better life..lol