I'm going to talk to a few of my pupils into accepting a worse grade.
What makes you think that you have the power to get them to agree to worse grades?
I'm a teacher, and I've been doing this for a long time. It's a necessary evil.
Why would you want people to get worse grades? These pupils could get into a lot of trouble for deteriorating grades and you would be the one responsible for their hardships. You need to give people the grades that they deserve.
Some people need to get a slap in the face.
That is a terrible thing to do especially in a position of authority. You should want your students to get good grades so it shows others how effective you are as a teacher. It's wrong to try and cause others hardships that could lead them down a bad road.