Sort:  

ok thanks I'm still trying to get my head around the decentralised concept.

Well, kind of. If you opened your account through steemit, from what I understand,they can "recover" your private key. I am not totally sure, but I'm guessing this meansyou gave them authority to change your private key. So yes, they could close your account, if this is true... I Would appreciate some clarification, actually..