Doubt on whether talaaq took place or not

Out of fear for a court case, the husband wrote in a letter to a lawyer that he and his wife are in the middle/process of separation, in the Dutch languauge. Does this count as 1 talaq or not even 1 at all? He saw this letter that he had once wrote while he was goimng through his emails. He defintly had NO intention to do so and even did not remember he had written this letter until a few days ago. Will this be 1 talaq or no talaq at all, since there was absolutely no intention and saw he wrote this letter almost 8 years ago. Now they are a very happy couple with three kids alhamdulilah.