if you bend them back straight enough, and insert it gently the socket will realign it the rest of the way for you. you want to be very very gentle. tweezers are WAY too big in my opinion. a needle or very fine flat screwdriver may work. in the past I have used a .7 mechanical pencil with the led retracted. the hole in the tip is just the right size for the pin, its plastic, supports most of the pin, and you can gently reallign it.
if there are a lot if pins messed up your chances of success obviously go down. I completely disagree on the RMA. the warranty is for manufacturing defects. not for destroying a CPU because of user error.