I spotted a new review - well the abstract anyway. It agrees that static stretching can negatively impact performance but concludes:
The detrimental effects of static stretch are mainly limited to longer durations (≥60 s) which may not be typically used during pre-exercise routines in clinical, healthy or athletic populations. Shorter durations of stretch (<60 s) can be performed in a pre-exercise routine without compromising maximal muscle performance.
Effect of Acute Static Stretch on Maximal Muscle Performance: A Systematic Review.