Wait and see what happens at the convention.

At the very least, this is a logical decision as well as a calculated risk*. Most work for her campaign staff to do is done in advance of elections; the primary elections have nearly ended. Whoever is let go that she wants after a nomination can be recalled later.

Plus, reduction of the payroll means more money goes into the Clintons' hands, to augment their debt service.

* Clinton's and Obama's actions carry psychological baggage. Clinton's will be too quickly perceived by those substituting wishes for reality as “evidence” or even “proof” she will lose the nomination. Obama's throttle-back in recent days, before the primaries have ended, may be perceived (and of course was even before it happened, by Obama's biggest fans) as an expression of confidence.