Sadly, my friend here has been in an accident and I do not have the knowledge to fix 'em... But in all seriousness, what did I do wrong? I made this model, tried to use a premade rig, and ran into some problems. I think I fixed most of them, and now I found this. For some reason, when I'm in any mode besides edit mode, the right hand goes weird. I have tried looking at weight paint and vertex groups and have found nothing. Can someone please help?
Here is the blend file: https://filebin.net/4ci3da5fv360m6db