So I think I figured this out. I was totally confused on the screen locking used in motoblur I think having come from Cyanogen on the D1.
First off, on the D1 with CM, every time my phone screen went off and I turned it back on, I had a pattern-based lock I had to input.
With the D4, there's always a "preliminary screen lock" which isn't pattern/code/password, but just a simple "drag this over" screen protection. Once this is done, you may be presented with a SECOND screen LOCK, depending on what you configured (20 minutes is probably your default time setting before this comes up).
So it's kind of stupid. If the time you set for the true screen LOCK to come up (pattern/pin/password) has been reached, it shouldn't also present you with the preliminary drag screen.
But in regards to your question, you should be able to disable the LOCK easily in the settings menu under Security. It's one of the options next to pattern/code/password.
You could also download an app called "No Lock" to completely remove not only the LOCK but also the preliminary drag screen.