I suspect the groundshare idea is a last resort if it's the only way we could get back in the Football League while our ground is built etc and to satisfy the lease rules.
I suspect the club hasn't even talked to any club about that as it's all ifs buts and maybes at the mo.
In reality, even if we went up this season it's unlikely we'd be strong enough to go up again on the pitch - the gap between Conf Prem and Conf North is a lot bigger than the step up we've just made from Unibond.
Despite that, good that they're thinking about all the scenarios, another example of how well run we are now.