Is it disrespectful to use a burial flag as a reenlistment flag?

I suspect Grandfather would feel honored that this happened.

I had a CO that explained his reasoning on re-enlistments. He said that there is nothing greater than a re-enlistment and that anything goes as long as there aren't regs against it. If the re-enlistee wanted to do it, then do it. This CO hated heights, and one of our sailors wanted to get re-enlisted by the CO on the highest yardarm at sea. The CO sucked it up, did it (while shaking almost uncontrollably) and the sailor had a blast. So, if the soldier wants the flag, and it means something, then absolutely!

Face it, a flag is a flag, purely a material symbol. Flags get used for many things over the span of their use. In reality, you generally have no idea what other things a flag at a function may have been used for. I'd consider it an honor to be reenlisted with a flag that had been used as a burial flag if that particular flag had some meaning to me.