RC actually addressed this recently at Chalk Talk (a Coach's Night for women). He joked about it, thought it was OK but only worried that someone listening to the program might think it is him. He also stated that he was driving w/ his son in Houston and turned to 610 and thought it was himself.
I also know for fact that Coach Slocum on a mobile (CSOM) wrote a letter to RC in which he explained his calls and hoped that RC did not take anything personally and that he was a supporter of RC and the football program. I also read the letter RC wrote back to CSOM which stated what has already been mentioned. He did not and to the best of my knowlegde, has not asked CSOM to discontinue his antics. His letter also voiced no displeasure but only mild concern for how it may be preceived by those that think it is him.
610 makes it clear that it is not RC they are talking to. If RC would take the time, just like Nick Saben, Dana Dimmel and Ken Hatfield, I bet CSOM would retire. The interviews 610 do with other coaches last no more than 15 minutes. Mack has a weekly call in show at nights and therefore doesn't call in during the morning show.
Funny thing is, RC has met CSOM, sat next to him at certain functions but doesn't know it is him. Part of CSOM's schtick is his anonymity.
I only wish the two of them would go on together. Now that would be funny.