Did they consider kicking Bob out of the group?
In order, from most painful to least, in my story:
- Kicking Bob out of the group
- Getting Bob to do a fair share of the work
- Getting Bob to do ANY work
- Having Bob do no work and have everyone else share the load
But since you mentioned "tasks", I assume there was actual work beyond chatting up your teammates. So your description is inaccurate.