There is no PR nightmare. One idiot on the Silverlight forums believed that Microsoft would ditch .Net, Silverlight and native apps for HTML5. It's a ridiculous idea to begin with but many other people believed it too without questioning it. Don't blame Microsoft for this stupid case of mass hysteria.
One person? Oh really? Ok Mr. Ballmer keep up the "lalalalalala I can't hear you..." mentality. That always works.