You can't let JMU hang 70 on you. I mean, it's not VaTech or even Virginia. It's James Freakin Madison. Might as well be VMI or VCU. Old Dominion. Lynchburg, (I don't think they have a football team)
Mack should be gone first thing Monday morning if even just for that. It matters not what you did 2 ,3, 4 year ago... or even what you can rally and potentially pull off this year.
Any head coach of UNC that allows JMU to hang 70 on you? You're ass should be grass the very next day... not at the end of the season - not even at the end of the week... the very next, damn day. Period.