Click the link for the full 6+ minutes of the Sanford Police Video which they released. The ABC verison apparently is from a hand held camera, phone maybe, of the police monitor screen. The question becomes was it done by someone and slipped out to ABC or just how did they get the ‘wobbly’ version?
Link to Police verison:
http://www.clickorlando.com/news/-/1637132/9759162/-/uoxobv/-/index.html
Big difference in perspective .. it's showing the event from a cam mounted at and looking at things from the other end of the transporting cop car vs the ABC version, and from a seemingly greater distance, hence less opportunity for seeing Z's head wound/s.
Then, either the SPD shop has a mile of hallways or they were walking Z around in circles awhile .. lol !