I am surprised by Turnbull's behaviour although, after decades of watching Australian politics, nothing should surpirse me. For years, the term "hater" has been used widely in numerous publications about a variety of (ahem!) Honorable Members. One can go back to the ALP in the 50's with Doc Evatt and Eddie Ward being two of them, and they weren't the only ones. The Libs had their share as well.
Abbott has shown a valiant attempt to be included in their ranks. He promised no undermining etc, and then proceeded to do his level best to stuff Turnbull until he succeeded.
I had thought better of Turnbull, but he has now shown that the old tradition lives on.
If ever we needed proof that the welfare of the country is a minor consideration, and that a snout in the trough is priority number one, and revenge is priority number two, we've been seeing it in spades for the last three years, and it's still going on.