Reply #1: Don't know about thread, but here is an article

[Whoa_Nelly]

The author of this dates the "movement" back to Easter, 2003, so maybe this will help you in locating the trhead.

Tear Down the Cross
Why is President Bush supporting a group trying to convince African-American churches to literally throw their crosses in the trash?
by John Gorenfeld, Contributor
12.21.04

This wintry season, as the faithful continue to receive alarming reports from the news that Republicans are all that stand between them and the outlawing of Christmas itself by hordes of secular humanists, the two presidents Bush have endorsed a powerful conservative interest group specializing in removing the cross -- not from schools or courthouses, but from churches.

Rather than the traditional egg hunt, this group, calling itself the American Clergy Leadership Conference, sponsored a nationwide "Tear Down The Cross" day for Easter, 2003. Last week, leaders in this radical cause presided over a Washington prayer breakfast featuring messages of thanks from the presidents. Former Senator Bob Dole came in person.

more...
http://gadflyer.com/articles/?ArticleID=258