May have bricked my Sony Ericsson Xperia Arc S. Any help?

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http://forums.androidcentral.com – After having this phone for a year, i decided that it was time to get root access. After following these instructions for unlocking the bootloader: Instructions | Sony Xperia , witch went perfectly well, I used this technique [ARC/ARC-S]Autoroot for unlocked bootloader - no flashing needed - xda-developers for getting root access. Everything went excellent, but when I, using the free version of Titanium Backup, tried to remove one of the frustratingly useless system apps (I don't remember the name, it was something with "fun" i think and the logo was black with yellow stripes or some (HowTos)