i'm sorry this has happened to you. i'm not going to take sides between you and your supervisor and say it was fair/unfair because i do not know the full circumstances besides that you say it was insubordination, which could be taken many different ways. What i do agree with you on is going into your group and letting them all know. i think the way you worded your post it made it sound like you stormed away from your supervisor and into the room where your clients were and said, "GUESS WHAT! I'm leaving, yea sucks, but it's not my fault". i don't think that is how it went at all. i think you gave it to them more gently than how you worded it. and being a T, i'm sure you handled it well and didn't devastate them even more, you just gave them proper closure. Now, pick yourself up from the bootstraps, take it as a learning experience, (even though it sucks, but that's how most learning experiences go), and move on to better things where you will be happier, so in turn you will be able to help your clients more sufficiently. Good luck to you, and keep us updated