When you post a question for a part, you should post a link to the **broken link removed**.
Vo2 is not the "second" output. It is the regulator's output voltage, specified over a wide input voltage and load current range. Vo1 is that same output, specified at 10V in and 0.35A load.
The reset output is strictly a logic level signal that can be used as a reset signal for microcontrollers, microprocessors, etc.
5.27V should not cause a problem. Are you sure your meter is accurate?