Yesterday , MultiFl0w devs release version 1.2.1 and they introduced a major update. You can now close any backgrounded apps from within MultiFl0w. Unfortunately, 1.2.1 was buggy when trying to close a backgrounded app, causing the iDevice to respring into safe mode.
Luckily , today version 1.2.2. was released, and this version should solve all the problems . If you experience the same problems after this update let us know in the comments. We think Multifl0w is amazing, and it became a must have app for us, next to SBSettings. We want to help making this bigger and better.