Just to be clear, Pennel's first 4 game suspension and the current pending suspension have been described in the press as violations of the
"substance abuse policy" which
does not include performance enhancing drugs.
It it were PEDs, you'd expect a report that stated a violation of the
"performance enhancing drug policy".
You'll see the PED policy reference in examples such as with the suspension of The Incredible Shrinking Neal:
http://www.channel3000.com/sports/packers/packers-mike-pennel-suspended/42721294
These are two different policies, two different remediation programs, two different suspension protocols.
"Substance abuse" covers alcohol and pot which is where one would expect most of these violations are occurring. Pennel has failed at least 3 tests, maybe 4, and not necessarily for the same thing.
Do with that what you will.
I would note this forum has a bad track record in calling for cuts in loud voices.