Looks like Julien Schapman (TouchXperience) is about to release a true device manager solution tor Windows Phones that includes unlocking abilities. Here are his words:
Windows Phone Device Manager allows you to manage your Windows Phone 7 device from your PC, you can simply view, install and uninstall "sideloaded" applications, explore device, transfer and sync files,… It is compatible with all Windows Phone 7 devices.
Windows Phone Device Manager detects when the phone is connected or disconnected, if you don’t have a registered developer device it can automatically unlock your phone, so you don’t need ChevronWP7 anymore.
You can also connect to your phone via Wi-Fi, for example to transfer files from/to your phone using Windows Phone Device Manager or the provided Windows Phone application.
If Windows Phone Device Manager becomes popular I think about creating an open marketplace for non-commercial applications. Developers are welcome to join the project!
We’ll keep you posted as soon as it’s available but this is some exciting stuff.