My barbell exercise for stroke rehab

Do not do this, only your therapist has the skills to know about this. I'm just impulsive and brain-damaged. The weight set I bought from a friend last year included a 15 lb. barbell. I haven't yet put any weights on it to try the bicep curls mainly because shifting weights from the dumbbell to barbell one-handed is looking for smashed fingers. So I just stand the barbell on end and wrap my left hand around it, the lower end is just in front of my left toe on carpeting. I push the bar straight out in front of me, it doesn't look good because synergistic muscles are fighting each other.  I control the swinging of it to my right and then pull it back to straight in front of me. I don't worry about dropping it because my spastic fingers will not release without a show of force. I then swing it to my left as far back as my muscles let me, this is not too successful, my pecs are saying, no, no, no. Then I pull it back to straight in front of me. This is all trying to get my shoulder spasticity to stop. My cane exercises here were an earlier example of that.  This can probably be compared to the commercial product UERanger
 A really advanced version would be to put weights on the upper end. Naw, really dangerous.
My goal is to have a free swinging arm that can do cowboy coffee.