<1.) ou can have him execute a deed and place it into escrow until you implement the deal beyond the deal, i.e. find a your new buyer.)
2.) You can have him execute a power of attorney giving you the exclusive right to convey title.
3.) You can have the seller transfer the property into a trust, then assign the beneficial interest in the trust.
4.) You can schedule a closing for a time in the future.

<Not really the title removal per se, but it would give you complete control and allow you to convey title wheneve you choose.

<Your transaction engineering thinking is right track. The easiest way to sign-up any deal is with your King's Buy/Sell Agreement.

<Wear 'em baby...with pride.

The King