[Al Skierkiewicz]

Ryan,
Are you using the backup battery input to the RC? Since the relay outputs of the RC are intended for Spike connections, I am not sure what the actual signal output is. They may actually send a keep alive output which could turn the relay driver on. The Spike input circuit is pretty complex and has a lot of input filtering. I suspect that the RC is actually triggering the relay drive transistor. Also, the relay output only has to rise to 0.6 volts to turn the relay driver on in this configuration. You could simply try a 1k resistor in series with the base of the transistor and I would add a 0.1mfd cap base to emitter to quench any noise and see what happens.