It's hard to tell if it's bent from the video. But if it IS bent I'd check mounting first to make sure it's not lifted on the side close to the I/O connectors. But if it were, it would probably not be cooling well at all.
If it really is bent you'd have to bend it back. You need to completely remove it from the motherboard, of course. I can't imagine how it came to be bent though...those 4 heat pipes form 8 vertical supports that would be very hard to bend. That will also make bending it back vertical very difficult. I really don't think this is the case. If the heatsink is new I'd take it back for exchange, though, if bent
Assuming it's not really bent nor lifted you can move the fan to the I/O connector side of the heatsink and...