Help! Lost 'recent used app' icons and ipod controls after using removeBG

[Acekiller]

I am using ios 4.1 and JB. yesterday I installed removeBG, it crashes and forces the phone in safe mode. After respring, i found that all the Recent used apps as well as the ipod controls (icons that are suppose to show when double click the home button) were gone. I deleted the removeBG app but the effects is still there.

I tried to toggle the removeBG from SBsetting but it crashes everytime I click on it....

Does anyone has any suggestion on what to do?

thanks!