Play mode question...

So I had my first chance to work with the DL2's today and things went surprisingly well.

I did have a question for a play mode that I didn't see (or at least maybe missed). I have a custom piece that is rendered for a 2w x 1h collage that I would like to play forward and backwards and loop it that way. Is this possible? It's a setpiece of a desert with an animated camel in the foreground. If it loops, the camel jumps. If I could go back and forth, it would look fine.

Any ideas other than re-rendering the custom animation?