Preventing page break after title page

Simply redefining \endtitlepage in the preamble would be sufficient:

\let\endtitlepage\relax

Figures that I'd get it AFTER I posted the question.

...

    % prevent a page break from being put at the end of the title page so that 
            % the contents of the paper spill onto the title page
    % save the function of the \newpage macro so we can restore it later
    \global\let\newpagegood\newpage
    \global\let\newpage\relax
\end{titlepage}
% restore the \newpage command after creating the title page
\global\let\newpage\newpagegood