Yes.

On previous trips I've simply tried (and failed) to go through MMB to get to OLCI. This method skips that, and takes you to the older-looking Select Your Boardpoint screen.

This is the first leg of an ex-AMS trip, though, and now I'm wondering whether ba.com has more relaxed rules outside the UK, and for trips orginating outside the UK. We'll see later this week. I'll try the same trick for sector 2 and see if it works.