Ability to manually fail over a site to site VPN

I had a unique situation where two sites from two different providers were both online but there was a routing issue between the two providers.  These two sites had two WAN connections but the site to site VPN only goes between the two primary links.  I needed to wait for TWC and Verizon to fix the issue.  I would have liked to been able to failed over just the site to site VPN.