Yeah you pretty much just carefully pry it apart with a screw driver working your way around the housing. The glue that Ford uses hardens in a couple minutes once you take it out of the oven so you may need to work a section then throw it back in the oven to re-soften the glue and keep working your way around. One side of mine took a while and was a pain and the other practically fell apart. I used clear silicone meant for sealing windshields and haven't had any problems with condensation. Use rubber bands or small c-clamps to compress the headlight while the silicone dries overnight.
2003 EDGE, 4.0L, 5spd, 4X4, 8.8 open, 4.10's, Oxford White, Doublelifted, 35x12.50 KM2's, 15x10 Ultra Baja Champ's, K&N, Gibson cat-back, JBA Headers, X-cal II, Tint, Scangauge, Kenwood Deck and Amp, Kicker CVR12, Custom Enclosure, 6000K HID Heads, 3000K Fogs, Headlight Mod, SPEC Stage 2, Slimlites, Delta low-pro toolbox