As you already know Apple have been patched exploit that used by iCloud DNS Bypass. There was many devices with owner information on lock screen. This devices can be unlocked until reboot using Application -> Crash method. Since it no longer works, here is alternative ways to crash Activation page.
Month ago I wrote in Twitter that I'm searching someone who work in Apple to help remove iCloud. Some time passed and I stopped expecting that someone will contact me in this case. On Internet there is a lot of scammers, about 95% of people who selling unlock are bad people.