Heck, I've never noticed the Mr. Easy's near the RCC! But if the flight was under gate agent control sounds like it doesn't matter if the EZs were there or not. And why do they have them near the RCC since normally you have to have checked in to get through TSA. Do that many people check in for other flights once they've already started traveling?
On a sep note - to the OP, sorry to be hard, but the RCC did the right thing in turning you away. You weren't a member. If they did your BP they'd have to do anyone else's that wandered in w/ irregular ops.
Glad the Boston flight went well. Cheers.