Sounds like the pastor isn't actually running the worship service. Maybe there's a "worship team" that's doing it's own thing during the allotted time.
Would I go back? At one time, yes. Now, I'd be inclined to keep looking.
Oh, it was very real.
I moved to a new area, and my fiancee and I decided to go church hunting. (I still am.) Anyway, we checked out this one - and at first, we loved it. Then came that song. I told my fiancee I wasn't putting up with that, and so emailed the pastor. He said he'd talk to the worship leader. Two or three weeks later, the song popped up again. I didn't walk out of the service, but I didn't ever come back.
Before I even raised the issue, I emailed the lyrics to some old college buddies, and they agreed that I was not over-analyzing them. They're pretty inappropriate.
Musical style isn't a defining criteria in my church hunt; I don't much care if a church sings all from the Trinity Hymnal or if they sing all Chris Tomlin choruses. But I will not put up with churches that have us sing songs about Jesus that my fiancee couldn't say to me in public without blushing.
All I could think of during that song was the "South Park" about Christian Rock. (Warning: it's South Park - and therefore pretty off-color, but also pretty good satire.)