Fingers pointing in all directions.
Only three targets I can think of:
(1) - The marshaller, if there was one.
(2) - The team responsible for calibrating the guidance, if it was switched on.
(3) - The Captain of the aeroplane, if (1) and (2) don't apply.
Looks to be (3), based upon the report.
As for 'that'll polish out' etc, remind me not to let any of you work on our cars. 'Bits' have passed through the rotating engine and the engine attachment (shear) pins and a lot of the engine structure will have been (maybe shock) loaded to an unknown extent.