You can use the AppDeleteRecursive method of the IIsWebDirectory object to delete Web application definitions from a metabase key and all subordinate keys. If the applications are running, they will be shut down. All resources associated with the applications, such as out-of-process packages, will be released. This action cannot be undone.
IIsWebDirectory.AppDeleteRecursive
<%
Dim DirObj
Set DirObj = GetObject("IIS://LocalHost/W3SVC/1/ROOT/MyAppDir")
' Delete the application at this directory
' and all subordinate directories
DirObj.AppDeleteRecursive
%>
AppCreate, AppDelete, AppUnload, AppUnloadRecursive, AppGetStatus, AppDisable, AppDisableRecursive, AppEnable, AppEnableRecursive