As you probably know, jailbreaking is that dangerous exercise that allows you to break the limitations artificially imposed by the big companies and enjoy the full potential of your device. However, it's not without risks and mobile operating system providers reserve the right to remotely remove unauthorized apps.
Either way, the fact is that this news is an undeniable proof that unauthorized apps for Windows Phone 7 are coming sooner rather than later. That's because the first step on the jailbreaking process of Microsoft's new mobile OS is achieved, since you already have COM access (Component Object Model allows developing and supporting program component objects within Microsoft's framework). However, this doesn't mean that Windows Phone 7 apps created by indie developers will be popping up like spring flowers, because these apps will never make it past the review process of the new Microsoft mobile OS. Until the sideloading process that allows you to run unmanaged code is succesfully put into practice, there would be no Windows Phone 7 jailbreaking, but it's only a matter of time. For more information on his discovery, hit Chris Walsh's blog.
source: Chris Walsh's blog via Electronista