Gaming Robot and I rewrote the SBSettings autolock toggle from scratch. It should now work. The toggle will also save your current autolock settings value from the settings app and restore it when you toggle it. When the toggle is on, autolock will occur. When the toggle is off, autolock will not occur. Thank you to Erica Sadun for help on getting SpringBoard settings to take effect immediately without a respring.
You can download SBSettings from the BigBoss Cydia Repository.