For a second when I read the title, I thought it had to do with Fatboy Slim.
Now having watched it, I've come to the conclusion Interpretive dance is just as much a bullshit blanket word for Non-Talent as Performance Artist has become over the years.
He will do this again, because his audience is a church congregation, and they will tell him he's done a great thing, and he will devote his life to the pursuit of his 'gift' and the plan god has for him, as evidenced by said 'gift'. This is how choirs are made. Choirs are essentially scores of untalented people pursuing their destiny.
This guy is buzzing so hard on endorphins, if you convinced him that God wasn't real, he'd have to join a black metal band or kill hookers to get the same kind of brain fix.