As I understand it you cannot truly RETURN TO STOCK as the Kernel and Radio are updated to 5.5.893 with the leaked OTA files. All you can do is flash the SYSTEM partition back to .886 and while you can do that, you would still likely be off the "official" OTA Upgrade path. Until the BOOT LOADER is cracked you are likely stuck on receiving updates via Cheese Cake staging server files.
That could be bad, what if you need to order a replacement from Verizon?
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