@ Vekky - Ha!, yeah, forgot that joke. I used to know what pan-m meant, but that was a long time ago. Memory ain't what it used to be, but I think I do ok considering. Can't say I blame him tho. Many pastors will avoid the subject coz it's so controversial and potentially divisive. It doesn't need to be really - we still generally agree on the fundamentals.
Not familiar with those WCC-type groups, so can't really comment. If they preach Christ and Him crucified, then I'm with Paul:
15 Some indeed preach Christ from envy and rivalry, but others from good will. 16 The latter do it out of love, knowing that I am put here for the defense of the gospel. 17 The former proclaim Christ out of selfish ambition, not sincerely but thinking to afflict me in my imprisonment.18 What then? Only that in every way, whether in pretense or in truth, Christ is proclaimed, and in that I rejoice.
Philippians 1:15-18
But if they preach 'another gospel..............' Need I say more?