That is terrible advice bro, you should never use dbol AFTER you finish a cycle. Where are you getting this info, GS and krat are totally right, whats the point? TO make sure you keep your gains after a cycle you make sure you work your ass off and eat A LOT and take either you PCT materials, creatine, etc.
Also, I can almost guarentte that this guy is long gone, this is from 6 years ago.