Truth be told Locke was confused as to what was going on, but at the same time he felt a sense of calm, a sense of calm he had not felt in a very, very, long time. A lot of it had to do with the fact he could walk, the fact that the prison he had been forced to live with for so long no longer had a hold on him. The final grip his father had on him was gone. No more would people be able to tell him what he couldn't do, just because he was in a chair.
Locke's smile widened at Jacen commenting on how calmly he was taking this. Yes, he could understand how that would be strange. Most people he imagined, would be screaming and yelling quite possibly throwing things. He noticed Jacen looking at the chair, and his smile widened just a little bit more.
"I suppose my reasons for smiling are obvious?" he asked, looking at the chair himself and then back at the other man. "My name is John Locke, it's a pleasure to meet you Jacen. And thank you, that complex sounds like a good place to be."
Brought here by a mystical seal which had locked Lucifer in hell? Locke wasn't sure what to think about that. Other than the fact he was here for a reason, a purpose. Finally he had one. After years and years of waiting, he had a purpose.