I did find this about the penalties:
Both cars were found to be in violation of Sections 12-4-A (actions detrimental to stock car racing) and 20-3.1.3A (wing mounting locations were not as specified by the NASCAR Sprint Cup Series Rule Book).
I think that means they tried to raise/lower the wing? It also mentioned that Jr. and Tony Jr. faced similar penalties at Talledega last year. They used illegal bolts that were slotted or drilled out or something, that allowed the window to flex, IIRC? Would be interesting to exactly what happened though.
EDIT: PS, I did find this to be interesting as well,
Gene Haas, who actually owns the fledgling two-car team, began serving a two-year prison sentence for tax evasion in January. The team is widely believed to be for sale, and two-time NASCAR champion Tony Stewart has acknowledged he’s received an offer to buy the organization.
This round of penalties should drop the purchase price, as the points deductions are a significant setback to a pair of cars already running at the back of the field.