Thanks all for the answers.
I know that undertaker bees do such housekeeping, but they're usually dead carcasses that look like just-dead workers that they haul out of the hive and tend to leave on the landing board.
I just thought it odd that two workers not only wanted to get rid of a completely dried and odd looking carcass, they both flew it out away from the hive several feet and were struggling with it on the grass in front of the hive...points I did not add when I posted this using my iPhone...and which were probably important to the discussion...many apologies.