Stuck Damsel Help

My dad and i set up a 150 gal. saltwater tank, and we decided to put 4 blue damsels in our refugium. One little rebel though decided he was going to get stuck in the bubble trap. Now he's stuck. Is there anyway to coax him out? we tried a net but its just to slim to actually be able to catch him. Any ideas?

 

How far down in the trap is he? How stuck is he?
Do you have room to take a strip of soft fabric to work under him and make a sort of sling to gently lift him out?

 

He has a good amount of swimming room, but my hands are to big to reach down it, he is about 7in down the trap but sometimes comes to the surface

 

Do you have anything that will fit in there you can get under him when he swims up? Something stiff enough to lift but nothing abrasive? A tongue depressor comes to mind. Maybe a silicon spatula handle? Just ease him up far enough to catch him?