Walls didn't make the top twenty in Le Samyn, so it is still open. 4 teams are only waiting for one rider to get off the mark. PCS doesn't have anything soon on the agendas of Walls (for Salvarani) or Hayter (Total Package), so it seems to be down to whether Padun (for Rakim) can get top 8 in a Tirreno-Adriatico stage before Fuglsang does so (for Search) in Paris-Nice. If neither of those happen (not outwith the bounds of possibility) and both finish, guess it's a matter of which race finishes first on Sunday.
There may be teams with two (or more) riders pointless as yet that crack their ducks before Sunday, so this isn't the certain showdown, but it seems to be.
Edit: three of the four teams on 2 pointless riders have Gloag, and the other has both Hayter and Walls whose lack of racing soon is already noted, so anyone other than Search or Rakim seems very unlikely. If Padun and Fuglsang both fail to finish their races, the battle is open again.