As above, no.
To elaborate we need to look at your question again:
Now we have to look at the word planet... A planet is defined as an object that is massive enough to have it's self-gravity form the planet into a near spherical shape, it must orbit in a clear path around it's star and hold...
It would depend how big the gap is, if it is comfortable for the steam to escape out through then it might not be of much use, I don't think freezing would work because of how the density of water works at near freezing temperatures, I think that water will flow straight back out of the hole...
If you're able to get water in the gap around the inner one then you could try filling that with some water and boiling it to try and create some pressure to help push up on the trapped one perhaps?
How did you get it stuck there by the way? :biggrin: