They should include themselves as untrustworthy for trying to do an end-run around their own kids.
My thought exactly. The $33,000 loss may be pretty minimal when compared to the fact that their child and child-in-law have now learned they can’t be trusted not to help their grandchildren hide serious wrongdoing from their parents.
Yep, Gramps and Granny trying to be the kid's 'pal' rather than a responsible co-parenting figure! Glad it happened to them to be an example to other fuddy-duddies that might be tempted to do the same.