Larry states, correctly, that everyone should be aware of what's in the GCR.
The problem is that this 'rule' is not in the GCR. What besides the GCR (published), supps (published as part of race entries), and FasTrack (published) am I supposed to read? Where do I find the 'guidelines' that have the same value as 'rules' established by the well doumented 'rules making process'?
The above should be easy to solve. Just post all this stuff in some public place on the SCCA web site and tell everyone about it.
That's the 'process' part; this is the substantive part: This is still a bad rule.
It's a bad rule because it establishes a single, unappealable (a black flag is not appealable in any real way) penalty for a whole range of infractions, from spinning in someone else's oil to outright reckless driving. The stewards need to be able to distinguish among the range of conduct and deal accordingly.