mediamanager3 / uvmoviemod HALP!

I'm trying to collect frags, and I've noticed that for example when I'm viewing MY demo with Mediamanager, I can view it from someone else's PoV when I right click on the spree and go on "Preview Spree", Wolfcam-style. However when I cut the demo, it always ends up on my own PoV.
How can I put it on someone else's PoV?