So I was attempting to get a droid from inside an office. I was in my YV-666, when I found that the office didn't have room for me. I used the 'kick' option and didn't realize that 18 unwanted droids had boarded my ship until it was too late.
Odd, as far as I was aware, for facilities, kicking passengers put them outside not inside your ship, and even then only one to give you room to enter. As for removing them from your ship, if its full use the kick passenger function again on your ship. Otherwise the only other option is to contact the owner and get them assigned to you. No other way unfortunately - the kick option from inside the ship was lost.