I understand why you feel like running away from the group.
Maybe I’m gonna say a nonsense but is there a possibility to be transferred to another group? I guess it’s not the best option however.
All I’m gonna tell you, I wouldn’t probably dare to do it but, I will say it to you.
There are two things you could do short-term: Talk to the therapist about the struggles you are finding with this person and also put into practise the very best of the skills and knowledge you are getting from therapy and try to apply it with this person.
I’m curious to know what attitude the therapist of your group is taking with this person. Maybe, this guy is not ready for a group and have to do a lot of work before individually.