Tennis writer Michael Mewshaw (whose book "Ladies of the Court" from back in 1991 was recently mentioned here) adds his two cents in a story called "Running Afoul of the Rules" in the Sept 2010 issue of TennisLife Magazine. Here's an Excerpt (Thanks Tennis Mom):
When rules are ignored or openly flaunted, one has to wonder what happens off court. To get back to bathroom breaks, in view of Dell’s decades-late confession about the 1983 US Open final, can one really trust that contemporary players are receiving no coaching, no treatment and no medications? When they’re out of sight, who enforces the rules? Who enforces the enforcers? And if the rules are violated now during a delay for intestinal distress, would we again have to wait a quarter of a century to find out the truth?