Bibliography using BiblateX, Xetex and bidi creating wrong punctuation

Bibliography using BiblateX, Xetex and bidi creating wrong punctuation

Although a Newbie, I have been using XeteX, bidi and BiblateX with great
success in Urdu. I have alphabetical footnotes with most of the secondary
sources in the endnotes. The endnotes and bibliography are in English,
whereas the rest is in Urdu.
However,the bibliography has a punctuation problem. Periods and
parentheses are not where they should be (see example). I have the feeling
it has to do with the LRE command. It's nearly as if the text is LRE in
the bibliography whereas the punctuation is still trying to work RLE. I
have tried all forms of bidi commands, that hasn't helped.
Any ideas?
My minimal example:
% !TEX TS-program = xelatex
\TeXXeTstate=1
\documentclass[12pt,a4paper]{memoir}
\usepackage[a5paper, left=.915in,right=.915in,top=1.651cm,bottom=1.524cm]
{geometry}
\usepackage{fontspec}% font selecting commands
\usepackage{xunicode}% unicode character macros
\usepackage{wrapfig}
\usepackage[footnotesize,justification=centering]{caption}
\usepackage{float}
\usepackage{framed}
\usepackage{libertine}
\usepackage{bidi}
\usepackage{perpage}
\defaultfontfeatures{Scale=MatchLowercase, Mapping=tex-text}
\setmainfont[Script=Arabic,Scale=1.3, WordSpace=1]{Jameel Noori Nastaleeq}
\newfontfamily\latin[Ligatures=TeX]{Linux Libertine O}
\newfontfamily\greek[Script=Greek]{Linux Libertine O}
\fontspec[Script=Arabic,Scale=1.0,WordSpace=1]{Nafees}
\rightfootnoterule
\usepackage[perpage,bottom]{footmisc}
\usepackage{csquotes}
\pretitle{\begin{center}\LARGE}
\posttitle{\par\end{center}\vskip 6em}
%%% ToC (table of contents)APPEARANCE
\maxtocdepth{subsection} % include subsections
\renewcommand{\cftchapterpagefont}{}
\renewcommand{\cftchapterfont}{} % no bold!
\renewcommand*{\contentsname}{ÝÀÑÓÊ ö ãÖÇãیä}
\chapterstyle{ger}
\renewcommand*{\chaptername}{ÈÇÈ}
\renewcommand{\thepart}{}
\renewcommand{\printpartname}{}
\let\origfootnote\footnote
\renewcommand{\footnote}[1]{\kern-.2em\origfootnote{#1}}
\renewcommand*{\thefootnote}{\alph{footnote}}
\makepagenote
\renewcommand*{\pagenotesubhead}[3]{\section*{#2 #1}}
\renewcommand*{\notesname}{äæŠÓ}
\renewcommand*{\notenuminnotes}[1]{\latin #1.\space}
\renewcommand*{\prenoteinnotes}{\par\noindent\hangindent 2em}
\usepackage[backend=biber,autocite=footnote,sortcites=true,
style=authortitle-icomp,block=space,notetype=endonly,firstinits=true,language=british]{biblatex}
\addbibresource{bibliography.bib}
\title
{˜ÊÇÈ\\
{æÛیÑÀ}}
\author{ÎÇä}
\begin{document}
\setRL
\maketitle
\newpage
\tableofcontents*
\newpage
 ÇیãÇä ˜ی Ïæš ãیŸ Ǎªی ÊÑÞی ˜Ñ ÑÀÿ ʪÿ! Êæ
ªÑ ˜Ó äÿ  ˜æ ӍÇÆی ˜ی یÑæی ˜Ñäÿ Óÿ Ñæ˜
áیÇ¿
\footnote{áÊیæŸ 5:\! 7}
ÒÀÑ ˜ÿ یÇáÿ ˜æ ÀæäŠæŸ ʘ ÇõŠªÇ ˜Ñ ÇõÓ äÿ ÈáÇ̪̘ ÇæÑ ÒäÏÀ Ïáی
Óÿ ÒÀÑ ˜æ ی áیÇ۔ یÀÇŸ ʘ Àã Ìæ ÓÇʪ ʪÿ
ÒیÇÏÀ ÊÑ ÓäȪáÿ ÀæÆÿ ʪÿ۔ áی˜ä ÌÈ Ïی˜ªÇ
\autocite[56--78]{Najim}
˜À æÀ ÒÀÑ ˜æ ی ˜Ñ ÊÀÀ ʘ Àä یÇ Àÿ Êæ Àã ǁäÿ ÂäÓæÄŸ ˜æ Ñæ˜
äÀ Ó˜ÿ۔ ãیŸ Ȫی ǁäÿ  Ñ ÞÇÈæ äÀ Ç Ó˜Ç Èá˜À ÒÇÑ æ
ÞØÇÑ Ñæäÿ áÇ۔
\autocite[33--34]{Murray1974}
%%print endnote
\newpage
\setLR{\printpagenotes*}
%%print endnote
\newpage
\printbibliography%[heading=bibliography]%
\end{document}
The bibliography.bib file linked to this:
@ARTICLE{Murray1974,
author = {Robert Murray},
title = {The Exhortation to Candidates for Ascetical Vows at Baptism in
the Ancient Syrian Church},
journal = {New Testament Studies},
year = {1974–75},
volume = {21},
pages = {58–79},
timestamp = {2013.03.13}
}
@BOOK{Najim,
title = {Antioch and Syrian Christianity},
author = {Najim, Michel},
editor = {Frazer, Terry},
subtitle = {A Chalcedonian Perspective on a Spiritual Heritage},
timestamp = {2011.08.29},
url = {www.stnicholasla.com/frmichel/antiochandsyriacchristianity.pdf},
urldate = {2011-08-31}
}
My second problem: I would like to get rid of the Chapter Heading
including the number above the Urdu title äæŠÓ. And I would like to center
the subheadings (sorry, these are not evident in the example), as Urdu
headings flush left doesn't look good.