You can send your BTC away after 0 confirmations if you export the private key and use any other wallet. This is really easy so everyone should be able to do it.
Yes but then he compromizes the security of the wallet.
Suppost 1 of them goes scammer , the other wallet is still holding, if you expose the private key to both services then you double your risk of theft.
It's not a good idea to mix services just as its not a good idea to use the same password in all websites, its the same logic.
What are you talking about??? Sending a transaction doesn't reveal your private key.
No i was talking about importing your circle private key into blockchain.info, if one of those services goes to be a scam, then it compromizes the private key.
For example if blockchain.info were to go a scam, if you import your circle address there then it would be pretty nasty.
It's like using the same password on all internet websites, if 1 service is fake and scammy then all of it is compronized...
For now both of those wallets are honest, but who knows what the future holds.
Then you read it wrong. He said that he already sent the BTC from Circle to his BCI account. So he doesn't need to import anything at all.