I think in the past I noticed that if a staff member was fired, he'd go on the TL at his current price. If he fails to get hired, he may then reduce his salary demand some, though I don't think I ever looked into it any further, let alone documenting any of it. The only situation where I saw some possible utility was with minimal level staff members, which I think would never show on the staff search because you could only start at level 2, but I think you could still find after firing them using a direct link if you had saved that.