I don't know the background why that pastor did this, however hearing such news as a European, I have to say it is something favourable. In Europe, there is a big gap between religious and non-religious music, and it is a serious problem. It is a historical heritage, a big burden on European culture, and a disadvantage. It is something artificial, and not natural. Pastors here now try to incorporate pop styles into the religious music to overcome this problem, but it is still not enough to satisfy people as much as real pop music. As if the methods of the chruch were still in decades or even centuries of lag. Because of this, a religious ceremony seems more just a play than a revelation, something that is very far from the people's mind. I am talking about white man's ceremonies now, let me emphasize.
So I think what this African pastor did is somehow a normal approach and this is what can bring religion closer to everyday people. Maybe he did it for some crazy purpose, or he went further than needed, but yet this act could be a good example to the pastors here where I live.