The juror was untruthful on the questionnaire that asked about bias.. so yes that's going to be legit grounds for mistrial. As is the pre trial compensation payout.

There's a YouTube video where a lawyer goes through the details of what exactly what he did and why it's grounds for a mistrial.

I believe that the charges stick if the kneeling wasn't the sole cause of death.

And Floyd was having massive issues breathing before he got knelt on, and his lungs were so buggered by the edema that they'd have assumed that killed him if they'd only had the body to work . with.

As far as I'm concerned this doesn't meet the required standard for a murder conviction. You need to show that what happened (neck kneeling) killed him beyond a reasonable doubt. If you want to rule it contributed to his death because he was in a bad way, you could come up with a lesser charge and gave that stick. If it was something that could have killed him, you have to prove the kneeling and not the edema got him.

Being more than familiar with how expert witnesses bow to political or prosecutorial pressure I'm a little cynical to Baker's revised conclusion.