そのマーリンさんです。本人はまだ準備が できていない、と閉じこもっていますが。
Benar. Dia telah menyendiri, namun berbicara tentang bagaimana persiapannya belum selesai, atau sesuatu yang sejenis.
Correct. He has shut himself away, however, speaking of how his preparations were not yet complete, or something of that nature.