Was this at a out-station? I have see this on a few rare occasions, the gate agent will clear station employees or their family members before other non-revs (DS is the code for DGS employees who work most of the out-stations). It seems to happen a lot less now with everyone being able to see the standby list on their phones and keeping track of who is being cleared but I'm sure it happens from time to time. I would definitely send the travel bureau a message!