I was struck by his notion that the ecological crisis should lead us to go back to interpreting nature rather than presuming to manage it."

Why ? It's just a silly play on Marx on philosophers only interpreting the world. Marx was right, the point is to change it - e.g. to one not dominated by rapacious capitalism. But of course to do so intelligently requires interpreting nature carefully, which is what climate scientists, etc. are trying to do. At this stage of technological development we cannot just give up "managing" nature, the issue is how do we do it better. We won't do it by going back before Marx to Hegel and just "interpreting":

Even Lacan is just a tool for me to read Hegel. For me, always it is Hegel, Hegel, Hegel," he says, sighing again. "But people just want the shitty politics."

http://www.guardian.co.uk/culture/2010/jun/27/slavoj-zizek-living-end-times