Drama aside, sometimes it’s appropriate to make a hasty exit from your client.
You (or your team) don’t get no respect. I’m not talking about checking a blackberry during a meeting, but hard core bad behavior to you, your team or your client’s team. Belittling, berating or threatening are not OK. Cut those folks loose if you can’t immediately turn them around.
Ethics have taken a holiday. Sometimes, big change (think mergers, layoffs, bet-the-career lawsuits) tempts clients to do things they’d never consider under other circumstances. Help them get their bearings back and coach them through hard change but don’t follow (or tacitly support) their ethical lapses.
The dog ate my homework. You’re working on a critical project that requires collaboration with your client—data access, emails, approvals, meetings. There’s always an excuse why something can’t be done by the due date (often including getting your bills paid.) This is a client who frequently fails—don’t let them torpedo your work.
Launching the emergency slide—sometimes, it’s the best option.