Then make the option for levels 140 and below to be able to transfer to that server, but nothing over 140 or so...

Also, set it to a limit of how many can transfer from TITAN to the other server. Say maybe a quarter of the server?
This means they still ahve the option to transfer back to TITAN as a fail safe.

and i forgot to mention in my last post, make it so that anyone on the opposite server of titan, is allowed to transfer once.
Once the servers are populated, you can do a server transfer, but in the end, keep both servers.

but cost of ownership of another server might be more than what EST has in mind at the moment, who knows maybe in the future =]

The AH will have to restart itself.