How toxic, thanks for the video

One of the items that can be loaded in is an Apers Dispensers. there is a trick to it though
if you place 3 or more and detonate all at once server will kick you
any less and you can repeatedly place them and detonate them as long as there are fewer than 3 being detonated at one time

I dont think the auto turrets are a "banned item" per se as it was never originally expected to become an issue.(placing under the map and preventing caps)
You can 100% pull them out through arsenal with the backpacks. I used to do it and put the backpacks on my ai and bring them with me to put auto turrets outside of enemy bases and other places on the map