tutututu,6d - 2 players share this account?

Pay attention to Black 46, which must be at A2 for creating ko. It's a kyu-level L&D mistake. And the whole fuseki was strange - it seems that kyu player played it.
And few months ago tutututu lost only 0.5 to Hutoshi,7d in no-komi game (without any handicap).
It's very strange, considering that Hutoshi is not much weaker than "able".

I think that different users play under tutututu account.