Share 'Sidearm Wrong?'

So I've always thrown RHBH and was recently stuck at a 240' driving wall. I worked on my form everyday, stuff like Snap, changing my grip, changing from an X-step to other stances ect. Today just screwing around I threw sidearm in my backyard to get my disc near my bag and the disc flew over 200' with a casual toss. On the course today my brother-in-law showed me a way to hold the disc sidearm si…