Mayfields statements make him appear to not be in full control of himself.
I figure Mayfiels would have stopped doing/taking whatever is making his screens come back positive.
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In the article it states Mayfields screens are "random". WTF? The Judge ruled NASCAR can screen Mayfield any time they want, why is NASCAR trying to make it seem these tests are from out of the blue and Mayfield is being chosen by lottery or random pick-um device?
Ya think NASCAR is trying to shade Mayfields position to NASCARS favor? Ya Think?
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"NASCAR is absolutely corrupted by power"
Ya Think?
Something I read in a previous article was NASCAR doesn't say what their screening for. In theory NASCAR could say they detected nicotine, tobacco is not the image we want to portray, your out of here!
So NASCAR doesn't say what their screening for. I call

on that.
Far as corruption
"That is what is killing the sport and why its a damn joke. ", I don't know if
corruption is directly responsible, I think NASCAR being able to make decisions that can't be directly challenged, or even openly discussed, have allowed NASCAR to make some pretty crappy decisions.
That ability to not be questioned isn't necessarily Corruption, but it certainly is Authoritarianism.
I knew there was something wrong when I learned Ford developed the 427 Cammer for NASCAR and NASCAR banned the engine before it was out of testing, Hell, IIRC the Cammer was banned on sight!