The client with the Challenger just called me for another detail, and I realized that I forgot to update this thread.
After a couple of conversations, Autopia / Ultima stepped up and dealt with the customer directly, and paid for a new decal. While they likely had no way of knowing this issue could occur, the product did state quite clearly that it was safe to use over decals. I do fault the design of the decal finish as well, but these things happen from time to time.
Kudos to Autopia & Ultima for taking care of their client (me), and my client as well. They have recieved my business for 5 years and will continue to do so in the future.
In response to some of the other posts in this thread:
I do carry my own insurance for $2 million, but did not feel I had any way of preventing this situation, although I certainly would have made sure my client was taken care of should the product manufacturer not stepped up.
I do not feel Dodge should be liable although I hope they modify their decals in the future.
To the person who said it is impossible for Ultima Paint Guard Plus sealant to create white spots - any sealant that creates any sort of a haze as it dries can create spotting when applied to the right texture as demonstrated. The decal was clear and defect free before applying this product.
Again, my thanks to Autopia & Ultima for their great products and excellent customer care.
Edit: I would recommend (as suggested above) not applying any wax or sealant over the Challenger Carbon Fiber look Decals unless the texture has been changed from the manufacturer from the previous model years.