For anyone still interested, I turned on syslog and captured some info regarding the reboots (attached). They appear to be "scheduled" and not the result of a crash:
2015-04-18T09:31:28.680065-07:00 obi110.sslan Reboot is scheduled in 1 seconds
2015-04-18T09:31:29.678732-07:00 obi110.sslan Reboot checking.....
2015-04-18T09:31:29.679038-07:00 obi110.sslan Final Cleanup before reboot....
2015-04-18T09:31:30.679041-07:00 obi110.sslan Goodbye! Reboot Now. (reason: 9)
2015-04-18T09:31:36.850885-07:00 obi110.sslan ==== Networking is ready ====
2015-04-18T09:31:36.851192-07:00 obi110.sslan IP Address= 10.0.0.97
2015-04-18T09:31:36.851381-07:00 obi110.sslan Gateway = 10.0.0.1
2015-04-18T09:31:36.851623-07:00 obi110.sslan Netmask = 255.255.255.0
2015-04-18T09:31:36.855214-07:00 obi110.sslan SYSTEM REBOOTED (Reason: 9, lifecycle: 351)
Then a few minutes later...
2015-04-18T09:35:17.141655-07:00 obi110.sslan Reboot is scheduled in 1 seconds
2015-04-18T09:35:18.136734-07:00 obi110.sslan Reboot checking.....
2015-04-18T09:35:18.137014-07:00 obi110.sslan Final Cleanup before reboot....
2015-04-18T09:35:19.137037-07:00 obi110.sslan Goodbye! Reboot Now. (reason: 9)
2015-04-18T09:35:25.108821-07:00 obi110.sslan ==== Networking is ready ====
2015-04-18T09:35:25.109085-07:00 obi110.sslan IP Address= 10.0.0.97
2015-04-18T09:35:25.109322-07:00 obi110.sslan Gateway = 10.0.0.1
2015-04-18T09:35:25.109565-07:00 obi110.sslan Netmask = 255.255.255.0
2015-04-18T09:35:25.113153-07:00 obi110.sslan SYSTEM REBOOTED (Reason: 9, lifecycle: 224)