It’s not possible – well, put another way whomever is suing doesn’t know what they are doing.
If the Committee engaged a contractor they did so on behalf of the OC. Without knowing the details, the proper party to sue is the OC. Bear in mind that the Committee is not a legal entity, it’s just the body that does certain things on behalf of the OC.
As a general rule Committee members are not severally liable for actions of the Committee as a whole. If they were nobody would agree to be on a Committee. And a lot is not a member of the Committee, a person is.
I wouldn’t worry about it.