Garrett revelation: why now?

The only aspect of the David Garrett assault conviction story that interests me is, why has it come out now? Are we in for another morbidly fascinating round of murky leaks, accusations and counter-accusations ACT-style? Will Whale Watch once again attract more visitors than Kaikoura? Or is this revelation merely the work of the tacky, tabloid media and Mr Garrett's fellow MPs can be expected to stand stoically behind him? Or he may prefer beside and in view.