How does this affect Matt Sheppard  

I didn't know Super Matt was sponsored by them till I saw your post. I see the Sponsor on his car. It may not affect him this year if he was given money up front. The IHRA stock car series looked like it was all asphalt-based. I don't think it's wise to speculate. Too many rumors have already spread across the web about IHRA.

 Maple Grove in PA, now known as Darana Raceway Maple Grove, was supposed to have Ron Capps and Madie Gordon there in May. That event was washed out. I wonder what will happen to the events schedule for September 10-13?