CHICAGO, March 5 — The Rev. Jeremiah A. Wright Jr., senior pastor of the popular Trinity United Church of Christ in Chicago and spiritual mentor to Senator Barack Obama, thought he knew what he would be doing on Feb. 10, the day of Senator Obama’s presidential announcement. After all, back in January, Mr. Obama had asked Mr. Wright if he would begin the event by delivering a public invocation.But Mr. Wright said Mr. Obama called him the night before the Feb. 10 announcement and rescinded the invitation to give the invocation. “Fifteen minutes before Shabbos I get a call from...