To avoiddamaging storage facilities these SPR releases will have to be stopped before too long.. and they must be replaced asap so not to damage the storage caverns permanently.. so no matter where the price of crude is its going to have to be replaced to maintain infrastucture IMHO..
So maybe they can replace some of it with discounted WCS but that could be a challange too.? Now if they hadn't kiboshed the Keystone XL the US could have had an easy fix.. but alas we all know that story don't we.. ;-)