At the top of the actual cradle there is a clip so as to securely keep the phone in place. What is not shown is that this can be removed. While a nice touch it's probably not really necessary. The actual cradle is very secure, in fact probably too tight. I found it a bit of a chore to remove the phone from the stand (release the clip and edge the phone out of the stiff cradle), so I removed it.
Still the removal of the phone is probably not as easy as it should be. If you receive a call you may find it easier to just pick up the whole cradle. This may get better over time.