*Actually* you have to disable custom IPL *before* you choose to return to clean OFW mode, otherwise you will end up with a brick that may or may not turn on OFW if you use the failsafe button (holding Select or Home, depending on the model and the CFW used). By "Uninstalling cIPL" I meant returning it to normal values via the cIPL Flasher application bundled with PRO. I was simply careless and forgot that I was even using a custom IPL.
I was simply fiddling around with the internal files of the web browser in 6.60 to integrate Netfront 4 Beta in the firmware, but when I have, I could no longer use the Go!Tube updater since Netfront 4 Beta is not compatible with the Internet Radio - I needed to re-install the OFW so in preparation for that I disabled CFW. You know the rest.
It was easily fixable since I have a fully hackable moment, but still, many f*cks were screamed out that day. My heart... stopped for a moment lol.