There's actually a good article on CompetitionPlus about this, as they interviewed the attorney who stated that his client is an "amateur racer" and "longtime NHRA member". So, it appears that some sportsman racer finally got tired of all the "enhancements" we are receiving, and decided to take things into his own hands. According to the interview, this person also does NOT seek any financial reward as a whistle-blower.
Here's a link to the full article:
http://www.competitionplus.com/drag-...hra-tax-status