Legal analyst on TV: "I have a hard time imagining Trump not being put in jail during this trial"

Why?

Because he is a danger to all the lawyers and the Judge and the witnesses and their families. And because he is a danger to their very survival he likely will be put in jail at some point for revealing things that will endanger these people and their families. 

It's likely when someone dies or is maimed by a crazy Trump supporter that will allow the judge to Put Trump in Jail or what they call "Protective Custody'.

The way Trump operates is like a Mafia Mob Boss in how he functions and the courts are used to putting guys like this in jail during trials in order to protect the general public from death or dismemberment by associates of the Mob Boss (or in this case crazies who support Trump in killing people). So, when the perpetrators are shot and killed after killing or maiming the family members of the Lawyers and witnesses and jurors of this trial etc. Trump likely will be put in jail at that point out of necessity for the public well being and good and general Safety. 

Trump is not a safe person for the U.S. government to have out and about harming and killing people by what he says ongoing in regard to this trial or anything else.