Really.
My estimate: The UCP are going to sit this one out until after the referendum (on leaving), for now they will fence sit like they've been doing.
If the 'leave' votes wins you will see the UCP pivot to be the Parti Albertois and will aggressively advance the next phases to follow.
If the "leave" vote loses, status quo, the issue loses some steam and goes away for a little while. The UCP will not risk becoming openly separatist without a clear referendum win on 'Leave' for fear of splitting the party, and risk the NDP to run up the middle again next election.
This is why you will see a referendum on leaving not on staying - follow on options remain open.