Android :: Lost Phone - Doesnt Have An Unlock Pin So Theres Nothing Stopping Access To Phones Data

I lost my phone and it doesnt have an unlock pin so theres nothing stopping access to my phones data....

Its an HTC Magic and syncs to my google calendar. I've reset my messenger password so im guessing altho they get into my ebuddy app automatically, the messenger password on the phone will be out of sync and wrong? I've chosen "log out of everywhere" from Windows Live. I've rest my Evernote password. I dont have any apps that can help me find phone or send an erase message to the phone.

So all thats left I guess is my Google calendar. I suppose its not a train smash having my Calendar data on the phone, but I'd like to erase it. If I go to Google Calendar and delete all the appointments will that delete the appointments if my lost phone syncs, and i think ive set it to sync every time the calendar app is run? Also, with contacts, i seem to remember those not syncing very often, only when i went into settings and contacts on the htc, so im not sure of how to get rid of all the contacts on my phone even if I delete them all from my Google Account.