Wilson sure didn’t look distressed in the cellphone footage after being “severely beaten.”
I would assume that at the point where you see him on the cell phone footage that he is fully recovered from the groggy state the @ss beating from Brown left him in. Gunfire tends to jerk a knot in your @ss and remove the cloud from your head. If anything he was probably relieved he survived the episode and most likely in shock, Probably the first time her ever discharged his weapon in the field. Just a guess though:)
swelling is usually delayed, I got punched once quite badly when I was a youngster, woke up with a swollen face that was not there the night before.
A dog bite gets worse before it gets better...you get the picture, happy to help out!