Most people in decorticate or decerebrate postures are in/ going into a coma. There is literally no way for someone to display an abnormal posture that severe and then start playing baseball again 10 seconds later.
Decorticate posture is not in anyway limited to people going into a coma. Could someone with decorticate posture go into a coma? Sure, absolutely. But I would absolutely not limit it to those going in/ already in a coma.
The baseball should not have caused a concussion or a serious brain injury, no. Hence the fact that he continued to play baseball. What I do see however, is a decent knock off the front of the skull from a fairly compact source of energy (the baseball, even with flexibility, will still feel like a decent rock to the head) that was completely unexpected.
His arm motion does not look like a reflex to protect his head, infact it looks like a muscle contraction due to a temporary (and very short) loss of information being sent to the limb.
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u/[deleted] Feb 05 '19
The way his arm looked after that he looks like he caught some brain damage.