The Captain is voted on by the players. It is the PLAYER's decision on whom they want to make the Captain. 

 

They chose Henne as Captain before the season, and by all reports they like and respect him. If anything, the interviews after yesterdays game seemed to give the impression that the rest of the team was disappointed that their performance caused Chad to lose the starting job. They blamed themselves if anything.

 

If anything, if Chad handles this like a true professional, which seems like a given what we have seen, he will stay the captain. Heck, I could even see Bortles saying that Chad has earned it, and talking about how lucky he is to have Chad there helping him out. 

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