The Electra RC1 remover tool
a tool to remove Electra RC 1 files from your device. it should not brick your device. Run electra first because this needs to be jailbroken to run. Also, you will have to rejailbreak with something such as Electra 11-3 and run uicache to fully get rid of Cydia.
This tool may or may not works in non-tweaks mode.