I've changed mine twice.. Once at 30K and again at 55K.
Here is my procedure for removal (follows the TSB pretty closely for the most part).
Start with a cold engine - after it's sat all night preferably.
1) I get an air chuck on my compressor and blow out any dirt/debris as best I can before removing the plugs
2) I use a bar style torque wrench when removing to make sure I'm ever exceeding around 40ft/lbs to turn the plugs (I don't trust the turn the handle and click style torque wrench for accuracy). I try backing them off about 1/8th of a turn if they'll go but no more than that. If they take more than 40ish ft/lbs (TSB says don't exceed 33) to turn then I skip to step 3 for that particular plug.
3) I get a can of carb and choke cleaner and dump about a 1/2 cap-full down each spark plug hole and let that soak around the threads for about 45 min.
4) If I had a sticky plug that didn't turn the 1/8th turn then I'll try again and then I'll repeat step 2 on that plug and add about another 1/4 cap-full of carb cleaner down the hole and let that soak in while I remove the rest of the plugs that didn't give me problems
5) Come back and get any sticky plugs that didn't go the first time.
6) Once all the plugs are out I crank the engine for a few seconds to blow out any excess carb cleaner that weeped into the chamber so I won't risk hydro-locking the engine
7) Verify the plug gap and apply a thin film of anti-sieze around the threads and all the way down the ground jacket. (basically brush it on with my finger to get a thin even coating)
8) Drop in the new plugs and torque to about 30 ft/lbs. reconnect the coil packs and I'm done..
So far I've gone 16 for 16 this way and never broken a plug (always been 2 piece plugs). I find it's just good practice with these cars to at the very least remove the plugs every 25-30K miles and reapply anti-sieze if nothing else Follow this removal procedure as well as do this as a regular maintenance interval (every 25-30K miles or so) and you'll likely never have an issue with a broken plug. The whole procedure takes about 30 min or less.