You could still use it as a router... But to my knowledge you would "legally" not be able to use the Z-Wave functionality. The FCC can crack down on people oddly. Although in such a case it would likely lead to a warning for a first time offender that was not really harming anyone. Repeats, of if it really interfered with other stuff...
IMO, easier to find one on eBay. If you contact Securifi directly by email or phone maybe they can work a trade in (no idea, but it would not hurt to try)? Also, I just noted that the Almond Guard page indicates they will have a trade in credit program (bottom of the page). Not sure when that will be released and when you might be moving though.