Even through the fog in his head, he knew this was a bad position to be in; her body sprawled across his meant that he couldn't easily move out from underneath her. Not knowing what else to do, he grabbed her free wrist as tightly as he could, pulling her arm out to the side as far as he could in hopes that she couldn't use his position atop him as a lead-in to something that would end up with his neck broken.
A strange glimmer of thought also cut through his rage--you could be doing much better things with her on top of you--but it was gone almost before he noticed it. Lacking other options, he twisted his face into a bared-teeth snarl and screamed into her face as loudly as he could.