Node Balancer to point to a server if all others are down?

Hey guys,

I was wondering if I can use the NodeBalancer service to point to a server only if all other servers are down?

I notice the "Drain" option, to only ever use a node if the session stickiness points to that server, but I'd like to have a setup where the server gives up the connection whenever another server is up / disregards session stickiness.

Basically, I'd just like a server to act as a downtime only server… You know, a place for a DONT PANIC message.

Thanks for any input!