PJE brought up concerns on python-dev regarding PEP 451 and module reloading. [1]  However, the issue isn't with the PEP changing reload semantics (mostly).  Those actually changed with the switch to importlib (and a pure Python reload function) in the 3.3 release.

Nick sounded positive on fixing it, while Brett did not sound convinced it is worth it.  I'm +1 as long as it isn't too complicated to fix.  While we hash that out, here's a patch that hopefully demonstrates it isn't too complicated. :)

[1] https://mail.python.org/pipermail/python-dev/2013-October/129863.html