Remove Control on Menu (2 levels deep)

The following code will remove a command that is just below a top level menu, e.g. File -> Open, however if you try and remove one level below that, an ASSERT is thrown.

How do I remove a menu item (control) that is 2 levels down, e.g. File -> Open -> Something?

Does not work for all controls...

OnInitCommandsPopup(CXTPCommandBar* pCommandBar)
{
   CXTPControl* pCommandSubItem = pCommandList->FindControl(xtpControlButton, ID_TOOLS_SUBITEM, TRUE, TRUE);
   if (pCommandSubItem)
   {
       pCommandList->Remove(pCommandSubItem);
   }
}

instead

pCommandList->Remove(pCommandSubItem);

use

pCommandSubItem->GetControls()->Remove(pCommandSubItem);

I need to remove sub menu item too but the above suggestion does not work( pCommandSubItem->GetControls()->Remove(pCommandSubItem); )

An example: I have sub menu with 3 items: A, B & C. I try to remove C. When I open the menu I get A, B, B.

Any ideas?