Hi yechanee,I would be surprised if the sole cause of your pain was the "twisting motion" that you may or may not have done while practicing this section. I think you are absolutely right that it's smarter to just move the hand, not connecting the notes physically. But I find it more likely that your 'mild tendonitis' is due to what you yourself call "mindless practice" - perhaps too much strain on the fingers during a long practice session with no breaks?Of course, there may be something in your scale/broken chord technique that needs to be adjusted, but that's very hard for someone in this forum to address. Can you get help from a teacher?