In the tour video they show a stream of plasma directed at the 'waste' of interest. This has two effects, one it disassembles any molecular bond reducing complex (and perhaps toxic) substances into their base atomic components, That's real but that's not NIF or anything resembling it. The temperatures to tear apart molecular bonds are less than 10,000 degrees. NIF operates at nuclear fusion temperature s -- 100,000,000 degrees.
http://en.wikipedia.org/wiki/Plasma_gasification
http://www.netl.doe.gov/technologies/coalpower/gasification/...
https://lasers.llnl.gov/programs/science_at_the_extremes/
