I know I'm splitting hairs here, but we are on the hook for Hewitt's salary next year if he is here or not, so I don't really look at it as eating his salary... if you fire him the only additional amount you are spending is the amount you are paying the next coach, and I don't see us paying much more than $400K for our next guy. So to me, we are not eating Hewitt's 700K - that money is already spent. We are only losing out on what we plan to spend for the next guy.
Heck, you could even structure his deal to be low for the first year with a nice hefty bump in year two to help offset the cost.