I notice that the page that I was just viewing is still in the DOM. Is there a way to remove the last page viewed after I transition to the new page using changePage()?
I'm not sure if it's related to your issue - but there was a JQM fix that went in yesterday related to errors when attempting to delete DOM elements: https://github.com/jquery/jquery-mobile/commit/d4c7b5da66641a3fd081a834ca3d12a5518d499b