Agree. Police telling him "Get Up" over and over. Why not just pick him up or handcuff him then pick him up. Does not look like appropriate use of a Taser to me. Tasers are used to stop someone with a knife or other weapon, not to make someone "get up".
Watched the whole thing. Looks like Police incompetance to me. They took a simple trespassing event and turned it into a potential riot where their lives could have been threatened.