Charlie and the explosion - what's up?

[The Lost Man]

He seemed really wierd after the hatch blew up. He told Claire that "nothing" happened, which was really messed up. The hatch blew up and Locke and Eko died (presumably).

[Eddy]

Originally Posted by The Lost Man

He seemed really wierd after the hatch blew up. He told Claire that "nothing" happened, which was really messed up. The hatch blew up and Locke and Eko died (presumably).

Yeah, two things I can think of.

1. John and Eko are fine.
2. Charlie's "been compromised".
3. He's on drugs.

Considered #2 and #3 don't seem so likely, I'm thinking it's #1.