I did something similar with my phone, except rather than disabling lock (it's easy to unlock, just slide the display up) I disabled password protection on it. Even with the keyboard, it got annoying to keep entering the password. (And it's connected to my company email. Go me.)
Luckily I had it with
me the day someone broke into my house and swiped my personal laptop, which, being my personal laptop and not containing any truly sensitive info, was not encrypted. It was protected only by a Windows (XP) password and a power-on password. It was also in sleep mode when it was taken. Much like your phone, I didn't even have anything running on it that I could use to locate it remotely. --
Think Outside the Fox.