Uelese is just out for Wales right? Pietsch (if true) is in for Jorgensen - not that I'm advocating that - but if Uelese is out for the QFs then they'd bring in another hooker for him then.
Reading the Doran article it sounds like Pietsch was to come in but that's now being 'reconsidered', and Ikitau is on his way over to join the BaaBaa's. It probably makes sense that he wants Len to have a run before joining the main squad, when is their next game? Maybe he will wait till after that to call in the replacement.