Time will tell - he's got 2 races, so a good start (both in practice, qualifying and races) with improving across the 2 races will do him good and put him in the shop window for a potential ride next year (probably not at the sharp end though).
Then Chris V takes over for the next 3, he's got a point to prove too.
So Shakey needs to do well to impress and needs to do better than Chris V will.
But what other riders could Honda call upon? The other riders are still involved in other race series (Vermuellen, Kiyonari etc) - who else could they choose? Fil2 has got his Cadwell commitments
Tim