Stepping through the video frame by frame it looks like your elbows are bending a touch early (you are trying to row the weight). I can't tell by the video but make sure you're engaging your lats (cue = bend the bar around your legs). This will reduce the tendency to row.
Is there a reason the platform is back under the rack? If you can't fix the platform then I'd lift facing the other direction so I could jump out of the rack (instead of into the wall) if I need to ditch.