It's possible if his arm is fatigued he is dependent upon the curve way more. Or any hook. Looks dead arm would clearly show up nor prominently on fast ball velocity, not just about anything hooking. But It is far from ruled out, since the population is normally in weak https://www.dailypioneer.com/2018/top-stories/5-people-from-kashmir-roughed-up-in-delhi-cops-begin-probe.html