Bigfoot leech

Usually what happens with a lvl 31 pg mule is:

Attker is killing bf. When attker knows that there is <10 minutes left for the bf, the pg mule is "pg'd" into the bf. PG 100% hits every monster in the game. (right?) It deals damage relative to the damage taken by the pger. The pg mule will die. If the pg mule is left in the map, and the pg mule is in the party, then the lvl 26 person will leach. This will give the lvl 26 199.99% simply killing a ghost will lvl you.

Does the PG mule need to stay floating, or can the pg mule click ok and come back to map with BF for it is kill, so the leecher get's the exp?