Stuck in a Gloryhole

After an exhausting shift at work, all you want to do is go to the bathroom, do your business, and head home. When you enter the women's room, you choose the stall furthest from the door: it's the safest. Not that it matters, because you're pretty sure there isn't anyone in here.

You leisurely push the stall door open and there it is. There is a massive cock protruding from a hole in the wall. It's a gloryhole! The cock is about 8 or 9 inches in length and its almost as thick as a soda can. The shaft is covered in big pulsating veins and the cockhead has practically turned purple with excitement. It is slick with precum and you notice that it is leaking into a substantial puddle on the floor. Every second or so, the cock twitches and another drop of precum forms at its tip.

You can't help but let out a gasp of surprise the moment you see it. The person on the other side of the wall obviously hears you, and their cock gives a little jump as you surprise him. When he jumps, a larger drop of precum is out and splatters to the floor.

"W-wait!" the man calls through the wall. "I-It's not what it looks like! I'm not some perv...I'm stuck! I can't get out!"

You blink several times in disbelief. Was he lying? You inspect the cock closer. The hole was very tight around the cock, which would explain the bulging veins and purple head. If you didn't know any better, you would think this cock was only a hair away from orgasm. Realizing that this man isn't lying, you close the stall door and lock it.

"So," you say. "What do we have here?"

"A woman left me like this!" the man cried. His voice had genuine panic in it. "She was giving me a blowj--err oral sex, I mean, but because the hole is so small, I cannot ejaculate!" The cock angrily throbs as if to enunciate his point.

"That doesn't make any sense, pervert," you reply.

"No! It's real! My urethra is crushed flat! Please, you have to help me! I can't get out and I have to cum so bad!" he wails.

Something about the strangers panicked tone and the sheer desperation in his voice, as well as the copious puddle of fluids, convinces you that he's telling the truth. Your mind flashes to his full bloated balls on the other side of the wall, churning and bloating, unable to release their pent up load.

So, what do you do now?