Obama also claimed to have started attending in 1991 or 1992, so his connection with the church would be less than 20 years—but his ties to Jeremiah Wright may go back several years more.
I picked up another GEM during that interview (it was with Major Garrett, not H&C):
paraphrase:
I would have quit if I had heard this rhetoric REPEATED (emphasis mine).
So, since he only heard it once from Wright, he stayed at the church.
Que Hee Haw:
Oh you’ll never hear us repeating gossip, so you better be sure to listen close the first time.