Android :: Avoiding Activity Stack Overflow

I have the following situation. I have a task with the following activity stack -- A - B - C I have a menu item that allows me to start activity D; so my activity stack looks like this -- A - B - C - D Then I could select a menu item that allows me to start an activity C, which would cause my activity stack to look like this: A - B - C - D - C Then I could go back (via the menu item) to activity D, making my activity stack look like this: A - B - C - D - C - D Doing this a few more times, it would wind up looking like this -- A - B - C - D - C - D - C - D - C - D - C - D - C - D - C - D - C - D - C - D - C - D This seems kinda stupid to me. I'd like it to simply re-use an activity, or pop the activity below to be on top (which goes against the nature of a "stack"). So, what I mean is if I had this activity stack: A - B - C - D And I started activity C (from the menu), I would get: A - B - D - C And if I then started activity D (from the menu), I would get: A - B - C - D Is there a way to do this without keeping some global list of activities and doing gross things to them to reorder them?