How is it possible to be deactivated on facebook iphone and yet still see facebook messages?

[Socks]

I am chatting with my mate over facebook chat, me on my laptop and him on his iphone. At the right corner of the chat, it's states that he has been deactivated for over an hour, yet he is still able to 'see' my messages and reply to them over facebook?
Does this mean that there is a possibility for someone with an iphone to go on facebook at any given time and not declare their last time of activation?

I'm confused and it's really weird.

[KM]

you can go app manager thn u rre moved it

[Spud]

When you deactivate your facebook account there is a check box asking if you'd like to still be notified. Usually via email. Either this is the case, or he has a facebook chat app that he hasn't relogged on. It is weird indeed. Maybe he's reactivated and facebook is a bit slow updating.