I worked for Dan for a little over 4 years before I quit to work at FordSpeed when it opened. I left for several reasons, but not enough time to list them here.
I remember at one of Bradenton's street car shoot-outs, Dan was there with Shane Wood, one of his customers. Dan protested Mike Freedman from Lethal Injection. Mike was actually racing in the non-power adder class that weekend, but he still had a bottle in his trunk. As it turned out, Mike and Shane wound up getting paired up in the second round. In the staging lanes, Dan asked Mike to remove the bottle. Mike told him that it was empty and there was no reason to remove it. He even went so far as to show Dan that the bottle gauge was on zero. Dan then asked him to disconnect the line. After a bunch of arguing, a track official asked that the line be removed to end all speculation. When the line was cracked, some gas was released. I'm not sure exactly what it was, since I wasn't standing close enough, but something was in the bottle. Mike ended up winning that round against Shane. If my memory serves me, it wasn't even a close race. I also believe Mike went on to win the event.
Not sure if this is the same race you are referring to.
Again, I'm not defending Dan. I would be hard pressed to do that.