Right analog stick seems to be dealigned with the L3 button on my PS3 controller, can I fix it?

So tonight I was playing a game and got extremely infuriated... and slammed my controller on the floor not really thinking about the consequences.... and the right analog stick is now stuck in a perpetual idle state of sitting either on the right or left, but never in the center like it should be doing. I was wondering is there possibly a way I can disassemble the controller and replace the stick? And if not how much could I get for the controller? Oh yes, I'm also selling the game that made me get pissed off... not worth getting angry over...