Well the case usually is that The leader wont let a certain someone back on the lead lap because he may think that that driver may have a shot at beating him. Now Kyle didnt have a car to win, but the reason that Jeff really couldnt let Kyle back on the lead lap (at least one of the times) was that Rusty was right there and Gordon was risking getting passed. SO its the leaders call on who gets it back and who doesnt, usually depending on how good/bad of a car the lapped driver has.
That was the second time after the whole thign started. Jeff was in no harm to get passed bc the others slowed as well.
I agree that kyle did get his lap back in the last yellow but for somereason NASCAR did nothink so but they are the boss so you got to listen to them.
I read over at a PE board that Kyle's crew and Pattie Petty all went over to Jeffs pits and told them what they thoguht. man i wish they would have had a TV camera on that.