yes it is 100000000% possible to repair.
I did it yesterday evening with my intel dg31pr there was broken pin with my mother board,
1st step-
you need a old mother board with same 775 socket
2nd step-
remove the pin from root of old bad mother baord socket
3rd step-
if u will remove the pin correctly from your bad board this pin will be very long.
4th
step this pin will be in two segments break this pin from center, and throw away the botom side pin and keep uper segement of your pin.
5th step- then put this pin in your new board (broken pin board) on the uper side of the hole there the pin is broken with little pressure.
it will work 10000000000000000%
no need for any glue or solder or anything else and plz dnt solder that if you will solder the pin that will meltdown with processor heat.
if u did not uderstand send me message at (haroon552@yahoo.com)
i will send you the procedure with pictures
Muhammad Haroon
Pakistan
Facebook: haroon552@yahoo.com