dbartman wrote in Book damaged during shipment - possible to bend back?:Ugh, that's unbelievable! You should get a full refund from eBay shipping.
There's little hope for that book as it looks like the cover skin has separated from the underlying material.
Your best bet is to reverse bend it carefully. Flex it gently at first, along the same line of the original bend, then continue the process until you get some semblance of the original shape back.Once you have the bend reversed as best you can, apply a consider amount of weight to it for several days, or weeks if possible, so that it will hopefully be mostly flattened. I would suggest at least 100 lbs. or more, if you have anything that heavy readily available. It should be sandwiched between two rigid, flat, materials, such as wood, metal, or books you aren't concerned about.