This is a fine example of the Westwall-Weasel.
First he whines "I never said I backed the abiotic oil theory!". Then he flips about and goes off on anyone who criticizes the theory.
It's his standard routine. Westall will hurl abuse at anyone who points out that the StupidTheory in question is, indeed, a stupid theory. But when pressed, he'll cry how he didn't actually say he supported the StupidTheory, and that anyone who says he did support the StupidTheory is a big mean liar.
Westwall, grow a pair and stand behind your various stupid theories, will ya? Your weasel act is pathetic.