Quote ="RWB"JD has said before (on twitter i think) that he and Monty Beetham would like to return to trinity one day. I would love to see it at some point but what Chezzy has done for us since coming in has been immense, long may it continue.'"
The problem with the logic or more to the point the OP's logic is that for this to happen the club would need to have lost its way and be facing relegation and as a result Chester sacked, which none of us want to see surely.
The only positive way I can imagine this happening is if CC was daft/brave enough to take the Wigan job if offered. This is a better scenario than the first but its still very disruptive.
I suppose the best way to view it is that we are lucky enough to know where to look if things go pear shaped.