I have uninstalled Active Social (AS) from my website, however, the roles created by the AS groups remain. I have been trying to delete the roles (20-30 roles) but keep getting the error because most of the users belong to those roles. 

Is there a easy way other to remove the role from the member's account in bulk and then delete the roles? I have 7000 members and each one of them belonged/belong to more than 1-2 group/role. 

So I am looking for a script something like this "remove user=all or * from role id="role id #." Obviously this is just an example. So if there is a script with which I can achieve my goal please share or direct me to the source. 

If the script works and it removes all users from that role, I will be able to delete that role and shorten the long list of roles created by AS I have on my website. 

Thank you.