Just thought i would post this for anyone who was having the same problem as me. If you use the included Smartlock program (the new WinMo 6.5 lock style), it has a bug that enables a locked phone to call your most recent contact. To recreate the problem, lock your phone and then press the green button twice. Your phone will connect to someone.
To fix this problem download and install the latest version of SmartLock from here:
http://forum.xda-developers.com/showthread.php?t=505032
I installed revision 2.0F and it is working great!
Perhaps this is something Zevot could target for the next update?