Workaround:
Get A1(yours or a friends)->Open Hangar Bay doors, get barely inside hangar and ready to pull out fast. Drop between 1-3 bombs(at the same time). While dropping bombs, run/fly up fast(so as not to blow up).
It is important this to be done by A1 bombs as, even though they are smaller than A2 bombs, the have a higher blast radius, force impact. Thus they will dislodge anything stuck under the hangar and hopefully repair the hangar.
Please keep in mind that this should be tested while having the hangar clean(no other debris).
If you do blow up while trying this, please use another ship with tractor beam to move the big parts after having the hangar repaired.
There have been a few people as well that confirmed this method worked for them as well.
This is only a temporary workaround as you are always prone for this to happen again after you get the hangar working properly.
I am now in that situation. I need to get an A1 and drop bombs again.