Text Tutorial:
There are many ways to do this, I will explain two of them, one which requires connection host and one that does not.

First way (Requires Connection host) :

1) Go into editor mode and hold a receiver node up against the invisible barrier in the right place.
2) Have another player go through the teleporter, or you can position yourself in the middle of a sender node, before you place the receiver node up against the barrier.

Second way (Requires that you are not the connection host)
1) Go into editor mode and bring a receiver node up against the invisible barrier
2) Turn it upside down, and hold RT + forward and tap “A” a couple of times until the teleporter goes through the barrier.
3) Try going through a sender node and see if it worked, if not, there is a part on the teleporter that you can grab from down there, grab it and move it around a little and eventually you will get it.

Overall I would have to say that the second way is a lot easier, because it just requires that you tele-tap the teleporter through the barrier, however if you are doing this by yourself you have to do the other way.

AS FAR AS I KNOW, this glitch was found by:
x iSBiLEN x / isbilen10
Dfeat Me / DfeatMe