In a word, No.
Apple didn't want to hand over the responsibility of application and memory management to the user, and personally I'm glad that they made that decision.
The purpose of the multitasking bar is to allow users to switch between apps and to quit apps in order to open them afresh (in case of crashes or weird behaviour).
iOS doesn't actually allow 3rd party apps to continually run in the background. There are several methods that Apple have provided to developers which allow a sort of pseudo background tasking functionality.
Long and short is, iOS is pretty damn good at managing memory usage and will kill applications in situations where RAM is running extremely low to prevent a total OS crash.
My advice is, let the OS handle it.
OK, I'm somewhat embarrassed, but it looks like the problem fixed itself after a couple of days. After noticing the issue first, it was reproducible for a couple of days. I backed up the iPad to iTunes, did a factory reset as a new device, and the issue was still there.
After that, I called Apple Support and they suggested replacing the device, since it seemed to be a hardware issue. I couldn't replace the iPad at this time since I was travelling, so I told them I would wait another couple of days.
When I was back from traveling, I backed up the device again and called Apple Support to arrange the pickup of the iPad. While on the phone with them, I had to describe the issue again and while doing so, was trying to replicate the issue while talking on the phone. Guess what, it worked this time and has worked now for the last couple of days without any issues.
I'm not sure how the issue fixed itself, but there are several possible explanations - not sure how reasonable they are, though:
- The iPad was with me on two atlantic flights (Europe - US and back), maybe the pressure change has fixed the issue, if it was a hardware issue. I remember that the issue was still there when I got to the US, but was gone after I got back.
- Doing another backup/sync with iTunes fixed the issue, which would mean that it was a software issue.
There may be other explanations that I don't see at the moment. While it all is a bit mysterious, I'm glad that it's working now. Let's just hope that it doesn't return.
Update July 2013
The problem returned after a couple of weeks. I finally called Apple Support and they exchanged the device for a new one, since mine was still under warranty. The new one works perfectly fine. So it looks like it was a hardware problem after all.
Best Answer
Web clips added by a profile can be set to not be able to be deleted with the X, therefore hiding the X when in edit mode. To remove a web clip added in this way, you need to remove the profile from Settings → General → Profiles.
You can also try disabling restrictions if they are on. Go to Settings → General → Restrictions and switch it off, then try removing the web clips.