Paraphrasing / Self-Correcting

Another way to say the same thing would be,

Having neglected to consider that

I don't mean to imply that

In order to avoid any misunderstandings

In other words

Let me back up and start again.

Let me try to put it another way.

Let me try to unravel some of this.

Maybe a better way of saying this is

Perhaps I'm not making myself clear.

To put it more simply,

What I mean is

What I'm trying to say is