can you type commands, or do you get kicked for flying upon joining?

if you can type commands, just /spawn

 

Try immediately logging in, and then doing /spawn

 

Someone could try teleporting you out of the location... but that wouldn't exactly work due to the fact you'd get instantly kicked, someone will need to remove the blocks of the location which you are stuck in.

 

The only thing I can think of that would solve this would be either you getting binding /spawn to a key via macro mod, or you coordinating something with a staff member via forum pm to tp you away as soon as you join.