Nothing will happen if the court throws out Chauvin’s third degree murder conviction - because Chauvin wasn’t sentenced for the third degree murder charge - he was sentenced for the second-degree murder charge.
Both Noor and Chauvin were charged with second-degree manslaughter, third-degree murder and second degree murder.
Chauvin was convicted of all three, while Noor was only convicted of manslaughter and third-degree murder.
Third-degree murder was the highest charge Noor was convicted of - and since that conviction was vacated, Noor must be re-sentenced under the manslaughter conviction.
Chauvin, on the other hand, was convicted of second-degree murder as well - so vacating the third-degree murder charge will have no effect, as he was sentenced under the second-degree murder charge.
Yes, Chauvin’s sentence is based only on the second-degree murder conviction.
The real violence will come if Chauvin’s convictions are overturned based on intimidation and threats during the trial. Any retrial should not include third-degree murder as a charge.
State surveillance means that authorities have enough to convict practically anyone on multiple felonies. Prosecutorial discretion decides everything. Anyone would who embarrasses Putin is singled out for prosecution.
We have a similar situation in the US. Anyone who threatens the official narratives from Democratic Party is prosecuted to the full extent of the law while who those support the party-line are protected.