Hello PoolForum, I've come with a rather awkward question.

A few days ago we came home to look at our beautiful above-ground pool to see that one of the posts have literally "sprung" up while we were away.. The only way I can explain is via pictures, so here you go.





We tried hammering it down, but it was unsuccessful. What would you say is the best method to fixing this problem?

Thank you very much in advanced.