They do, but haven't released the footage. The lawyer for the owner has footage from bystanders and probably the bar itself that so far contradicts statements made by the police. They already demonstrated that the arresting officer lied on his PC statement which resulted in the felony charge being reduced. I don't understand why any prosecutor would want to take this case to court, but somehow they haven't dropped all the charges yet.
It gets worse than that. I live in StL so I got to hear all about this one. The prosecutor was recently forced out of office for screwing literally everything in the office up so badly that all but a couple of the attorneys quit. Cases were getting dismissed or delayed because DAs weren't showing up to court on the first day of trial, because many times they weren't being told they had been assigned the case. People weren't getting paid, and defendants were languishing in jail for months before any action was taken on their case.
The head of the prosecutors office was not showing up to work, apparently working on a health science degree or something and was basically doing everything but her job and she fought every attempt to kick her out.
Things have started getting better since she was removed but there is a HUGE mess to clean up in the STL justice system right now so if this bar owner has to go through the courts getting any kind of resolution will take a long time. I hope he has a good attorney with a lot of patience and tenacity because he's going to need it.