Oh geez... Better go get my tinfoil hat...
I'm not going to waste my time with any conspiracy theories, but I do think insider trading is kind of a bullshit crime in many cases. Only an idiot would fail to act on a tip that happens to be passed to him whether it is inside information or not. No one is going to sit idly and watch $750,000 dissolve. Of course, it's a totally different story when it's a deliberate attempt to acquire and profit from information unavailable to other investors.
If I remember correctly, they went after Martha Stewart because she was the CEO of a publicly traded company and also once had a stockbroker license. In other words, she definitely knew better and should have handled the situation differently. Is or was Mark Cuban ever an executive for a publicly traded company?