Post-CL14 'upgrade' from the Sprint store, my phone has started doing this as well. I tend to ignore this now though. Even though it's saying I'm on 1x, I know I'm not, or my signal is usually really low. Also, I judge when I'm on EVDO by how fast I load web pages or how many chugs, if any, I get when streaming music. If I get charged for data roaming or whatever, I can show them proof of the fact that I 'don't know' when I'm not on EVDO, thus negating my issue completely. I'm not that concerned with it.
On the radio lockouts: currently the only thing I've noticed that causes this is heavy data use. I have no idea why, but when it does happen, just pop the back off, slip the battery out then back in, and re-boot. It's a hassle, it's annoying, it shouldn't happen, but we have to deal with it. >.> Sorry, but that's the only fix I've found that works, as well that being the only fix I've seen mentioned.