Is Mirdas able to use his movement to get out of the grease without a dash? Asking for a friend.

Considering a bandit's default health is 11, would a damage roll of 9 leave the bandit who attached Jacoby ready to keel over at the lightest touch?

I think with that you can attack as an action and attack as a bonus with your offhand without adding your mod to the damage of the attack 
