Sorry, Ger, just saw this. Yes, you can deactivate and reactivate as many times as you want. The manual activation through the website it not implemented, but manual activation through the activation client is. It basically just sends us an email with your MAC address and computer name and we build you the license file on this side and email it back to you.
So, just run the activation client like normal and go through the manual process on both computers and I'll send you a license file for both so you can use both concurrently for now.
Also, as several people have discovered on Windows 8, you need to go to the StrataFrame folder and run the activation client manually with administrative privileges in order for it to save the license file properly.