Motorola E815 / E816 Hollywood

i personally think voice recognition on a phone is all but useless without a headset, and i don't use one. i know on older firmware versions, deleting all the quick text entries makes the voice recognition button stop working. however, the new firmware fixes that bug. is there anyway to disable the button in the newest firmware? it's just annoying because occassionally when the phone is in my pocket sometimes that button will get pressed and the phone will start beeping. i could lock ALL the keys, but that just makes it a pain to change from loud to vibrate mode, etc..

thanks