What happens if you use something like:
\newlength{\awidth}
\newcommand{\mygraphic}[2][]{%
\settowidth{\awidth}{\includegraphics[#1]{#2}}%
\parbox[t]{\awidth}{\mbox{}\\\includegraphics[#1]{#2}}}
And then put \mygraphic{foo.eps} where you want it to be aligned.