The twisting of the tongue reminds me of what my tongue felt like when I first began tongue strengthening exercises. It sounds to me like you need to work on balancing your tongue strength, and focusing on keeping equal pressure and strength with both sides of your tongue.

Here's a link to a few myofunctional exercises that helped strengthen my tongue, that might also benefit you:  /community/community/main-forum/tongue-strengthening-exercises/#post-13448

Also, if you are able, I would suggest going back to a myofunctional therapist and get one-on-one time to figure out how to adjust and correct.

Thanks a lot for the reply, I just did 5 reps of skinny tongue and I can already feel slightly more even! I’m still way off but can hold that for about 2 minutes now. I’ll do skinny tongue every day for a few weeks and see what happens. There is only 1 therapist in my area, they were really nice but I did get worse after a few appointments but if it doesn’t improve in a month or so I’ll give it another shot. 

FYI if you have tongue ties, they can be asymmetrical too.  I'm doing an entire year of myofunctional therapy and got my ties released 5 months ago. I still gain mobility in my tongue every month.

You said you got worse after a few appointments? Would you be willing to elaborate on that?