Welcome
from another Dinan M5 owner. Mine just doesn't have as many Dinan parts as yours. Don't remove the front bumper too quickly. The grill with the T-bar on it may be there to hold on the brake ducts, which isn't available on the standard drill. That's why I have the same bar
Lucky the owner had a spare tire. Looks like that tire was well past it's prime. I don't think the car of fix a flat would have done any good with tire remains you had.