Is there a way to lock the lens-change-button on 5D Mark III ?

Hey! I just got the 5D Mark III, and after that I got the 70-200 f2.8 IS II
Lens is so good im thinking ill just stick that permanent on the 5D3. But I have a serious problem with the button that releases the lens, I keep hitting it without trying when I remove the camera from camerabag, etc. So the lens falls of. So every time I now have to check if the lens is on properly when I retrieve my camera. I dont know how this happens so easily, I never had that problems with my 350D, 40D or 5D mark II.
Is there a way to lock this button, does anyone have a smart physical block idea to it. Must be something I later can unblock if I want to change lenses.
Right Now its tempting to gaffa tape it somehow but recon I'd ask here first.

Something is not right here. Accidentally depressing the lens release button does not cause the lens to 'fall off'. When de-mounting a lens, there's at least 50º of axial rotation after lock release, with the first 40º offering a degree of stiffness. Removing a lens does involve some degree of deliberate action.
There was a debate about this across at POTN [url=http://photography-on-the.net/forum/showthread.php?t=961169]LINK[/url] some months ago; the consensus was that, for those who insist their lenses DO fall off, there must be a degree of user error. But you're here for advice - a one-second precautionary twist of the lens before use'll provide reassurance the lens is locked down properly. Or send both lens and body to Canon for a check-up.

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