Thats called "foot drop" been there too. Thats caused by a loss of brain signal. Sounds like he suffered a Diffuse Axonal Injury (DAI), not just a Blunt Force Trauma. What hospital is he in?
As for the talking none sense. They are REALLY tricky in things they say to elicit certain responses. Brain injury patients are getting "tested" all the time.
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"like strapping a pillow on a bull in a china shop" Bullitt
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