Yep, you did exactly what you should have (hopefully you left it in the ice bath long enough to get the most cooling out of it). Hope your power is back on quickly!!! 
For short power outages, it’s nice to have a UPS to keep your cook from being interrupted (the default behaviour of the APC is to NOT resume cooking when the power has been interrupted). This is a safety feature, as the food could have dipped into the danger zone for too long without the cook being aware.
Had a thread on UPS’s here: Protecting your cook with a UPS
Once the power comes back on, you’ll just need to adjust your cook time for the amount of time it would take to thaw your meat…then resume the cook from there.