Did sea life arise twice?

Slashdot points to an article in the Daily Mail about geologist Dr Adam Maloof who found fossils of sea life of 650 million years old, predating what until now were believed to be fossils of the first sea life, i.e. the first life on earth. If life has arisen twice on earth, it may as well have arisen a dozen times even before 650 million years ago. But even if it's only twice, then this is another proof of Darwins law of evolution. Evolution can fail easily, and just start again. But what about a god who fails, kills his newly created life, waits 100 million years and tries again?