You should not attempt this. Roblox hasn’t even released this fully yet and this is, in a way, teaching users how to bypass that and get access to it earlier.
Most of the roblox API is un documented and roblox doesn’t really release any updates about the API, it’s not necessarily risky, but it shouldn’t be something you’re playing around with.
No, he didn’t. That code merely tries to bring your avatar to its regular pose, however, you can never restore the exact original avatar posing.
If you tried to use console to put the original pose, you’ve literally corrupted the posing and that code @Noah provided will try to re-pose the avatar so that it’s close to normal.