No, unfortunately if this occurs it may mean that the game has frozen. Unfortunately the only thing that can be done is to refresh the page to start a new game. You should make sure you are using the latest version of java as well as an updated web browser version to limit such issues.
"Computer thinking"
Sort:
I sometimes get the "Computer thinking" prompt. The game just sits and churns for many minutes. I have given up trying to wait. Is there any way to either avoid or get past this prompt?