There is one safe area to approach him on.....Last night Public Broadcasting presented the 'cover up' of pedophiles by the WT.
http://www.pbs.org/newshour/bb/leaders-jehovahs-witnesses-cover-child-sex-abuse/
You can do as others have said reach out to him....restore the friendship and perhaps indicate that you have become really stumbled with the pedophile issue and the damage it has done to many JW children. The two witness rule was never intended to use against children when abused by an adult.
It's out there, it's true and it is not old news. There is nothing he can take to the Elder's about this subject and it may be interesting to see what his reaction is.