Runner attempts to advance during dead ball

[SAump]

Does the rulebook suggest a penalty be involked in this case? A player warning/ejection may be merited for this unsportsmanlike act, under rule 3-3g-4, along with bench restriction or ejection of coaches. Yet our solution may be as simple as fix it and move on. Need further guidance from someone w/ more info/experience to determine the actual nature of this offense.

Posted older link from 2005 baseball side of website below. 1/2 call for DP, 1/2 call to fix it.
Base Running Error?
Posted similar link from 2004 softball side of website below. Calls for DP.
What's the reasoning?
Posted older link from 2003 softball side of website below. Calls for DP and provides {2003} FED softball case ruling, situation 10.
switching of bases
Note all 3 links above involve 2 runners switching bases, not one advancing a base, during a dead ball.