iPhone stuck in recovery mode after power button repair

My power button was only working intermittently, so I followed the guide to replace the power button. There wasn't a detailed description of how the power button, power cable, and power button bracket should fit back together - and as it rather falls apart when disassembling I didn't see their original configuration. I wasn't sure if the swiveling silver bar on the power button has a special purpose related to the power cable?

I successfully got all tucked up again and finished the repair. Now my power button doesn't work at all, and worse, my iPhone is stuck in recovery mode when I plug it in.

I've connected it to iTunes to restore, but after update (iOS 7 was already installed) and going through the restore process, it still boots up in recovery mode. I tried twice, same result.

Any clues to a cable that didn't seat all the way or a part that might be damaged that would cause this?