Pity you can't say much for legal reasons, would be nice to know the name/business of the twat (their own and/or whoever they're currently working for) to avoid like the plague and warn other people away from.
Laying down in a ball is fine, sometimes you need to defence curl to regroup so you can actually get back up again (I usually run under the assumption that people will eventually get back up, just some take longer than others).
It's always great to enjoy your job :D
The name of the business, the name I gave my comp[any, is something I'm prevented to mention. I know where the character works now, I even know where he lives and have had (in the past) the thought of dealing with things in my own way, but I've not allowed myself to think that way for long; that way lies madness, or worse.
I did a little of this, but it's really not my style; laying down and pretending to be dead.
I ended up uncurling and having a think which led me to action and it's that action that helped me rebuild. Now, yeah I'm fine. I can talk about the situation philosophically and without that feeling of...well, of emptiness and breathlessness. It was a terrible, life-changing moment, but I survived.