Hedgedweller,
First of all, I'm sorry for the trauma you have gone through. Secondly, if you are looking for someone to blame, it could have been me! I have over many years , changed numerous components both on engine and airframe of that particular aircraft. I can assure you that all Professional Aircraft Engineers take your safety as paramount. If it isn't safe to fly, it doesn't! Simple as that.
Just to confirm 757 do not have fuel jettison option.
If you want to ask anymore questions please Pm me.
Well done to the crew.