well, bent pins back is easy, i had to do it recently and is not that hard to do
the chipped part on the bottom, doesn't mean the cpu doesn't work, some pins control ram, others control voltage, others do nothing
bend the pins back in position, try it on a motherboard you know is working, give it a try
i have seen cpus that after falling lost pins completely, resolder those pins was fun, and doable
the worst thing you can discover is that is dead, and the client will need a new cpu and also stop dropping expensive important pc parts