Honestly it seems like a waste to revivify the party member post trial when they could have let the rogue fight to the death solo and revivify in the streets much sooner, or they could have revivified somebody they murdered unless that person really deserved to remain dead, but doing it at the execution is silly they're going to have to roll initiative for all the guards again.

If anything, the DM is probably angry that they now have to freestyle regional laws about the use of revivify on death row criminals and create a brand new series of combat encounters with law enforcement, and becoming outlaws definitely has some effect on the main story arc.