Not sure what went wrong, but I'm wondering how much effort it would take to make a "bed of nails" as used in automated testing... If you can source/make the probes, making a jig may not be that hard assuming access to a 3D printer or laser cutter. Still, I guess it is a fairly fine pitch.
Hopefully someone better qualified can comment on what went wrong and your options for de-bricking.
Regards,
Andrew