Write a letter to the committee seeking an assurance, to go on the record, that no common property was damaged during or subsequent to the renovation.
You would also like it to be put on record if any ex gratia payments have been made to any committee members or to the strata scheme to cover damage to common or personal property, especially in case future insurance claims may be affected.
By the way, someone needs to write to the council’s planning department. Any work inside a unit that involves changing the layout or removing load-bearing walls requires council approval. Your committee has been duped.