Is it possible to use strait PHP in our templates along side of Twig and or instead of Twig?
If so how does one go about it?
No this is not possible.
If you really need PHP, you can write a plugin with one of the following:
Why Twig anyway?
The question to use php in templates comes up every once in a while, but there are good reasons for not using it.
For example if Craft changes its code you don't have to worry about your templates. The upcoming update of the Yii framework would force you to rewrite all your templates if they were written in php.
There is also a great article from Fabien Potencier on this topic -- tl;dr php is too verbose for templating.