If you are going to take it somewhere to get the work done, ask to see the plugs afterwards. If one or more than one is smashed, you have bigger issues to worry about. So ask to see the old parts, and make sure you tell them before hand so they don't throw them out in the process.
Im pullin the plugs myself this evening so Ill let ya know, If it is as you say it may be whats the full extent of the damage?
2001 4dr Black GTP Stock and staying that was... maybe
1997 2dr Black GTP Open Cone, GXP Rims, Black Headlights, ZZP Headers, ZZP Cat Back, Bunch of suspension parts from ZZP, ZZP 10.5MM plug wires, Autolite 605s, Overkill Tune