Ok I have a work-around its not really a fix so much as it is adding an extra layer of protection. I googled around and found some people talking about lock screen replacements and came across a gem. There is a free app in the marketplace called Lockbot this is the key in my opinion. Now there is a paid version available that will give you tons of themes and the ability to use its own pattern locking screen, but im cheap so I didn't go for that. So here is what you do.
1 setup the pattern locking just as you would normally use it
2 download the Lockbot App
3 configure the Lockbot App so that it show what ever unlock screen you prefer
Once you have this installed and set up, what you will see is an unlock screen with the slider bar like you have when you dont use the pattern lock. Once you slide the bar it will take you to the pattern lock screen where the dreaded 911 button lives. Just draw your pattern and you in your phone. its one small extra step but no worries about accidental pocket dials.
Word of caution lockbot seems to have issues with some phones and some users dont realize you can actually do a good bit of customizing. Also when you first turn you phone on Lockbot will no be loaded it takes a min or so to load and you may even have to lock and unlock the phone once to get it to work. I haven't noticed any issues with it and I have been using it for several days now.
My phone is a LG Phoenix LGP505 running Froyo 2.2.2