How to act, if you don't trust Bitcon Cash (OP_RETURN?)

[digmoney]

Please forgive me, but I can't find the information anywhere else.

Let's assume that Bitcoin Cash will happen and I'm tempted to get some coins for myself.

How could I safely get my coins and put them on a exchange?

The suggested way from Bitcoin Cash seems that I have just to copy my wallet.dat with all my bitcoins into their client and hope that they are not stealing my keys and that they will successful only move the Bitcoin Cash and leave my Bitcoin on the keys trusting that they is no bug on their client. Both a risk that are not willing to take.

I read that you could prevent a Bitcoin transfer also triggering a Bitcoin Cash transfer, if you are using a OP_RETURN with a special amount. However I don't understand how to do this. Is there an easy tutorials for those that want to move there bitcoins first and than give the Bitcoin Cash client only an key that has no more bitcoins on it?

[European Central Bank]

the only thing you need to do is send your bitcoins first to a new wallet after the fork. then all you're left with is the private keys for the bitcoin cash.

it'll be simpler if you create a paper wallet and send your coins there now. then send them back to your main wallet after the fork. then you have a raw bitcoin cash private key and security doesn't matter any more.