well if you're going to do it that way - with tweezers, you need to push that bit of stab wire up and out the way so you can get the little bit back in - but you need to put the stab in so that the wire goes in the middle - so it's a bit of a muck about and quite difficult, but it is possible. but if you don't know what you're trying to do you may just break it completely. the best / least risk way would be to desolder the board entirely and fix it and then put it back together - but if you are not experienced desoldering can sometimes break everything entirely too! if you're UK I can fix this for you.