Just learning

Added a debug statement in unwrap(), rebuild js, changed bookmarklet
source to my forked copy
Turn on debugging
Replace document.ready with window.load

See if that changes anything...
Change JQ to jQuery

...since I am pretty sure jQuery(document).ready does in fact fire
Forgot to rebuild js
Inspect url of what we're currently considering the document
Try that with caps
More document state debugging
Try removing the document.ready altogether
Extra debugging to find out what's going on inside unwrap
Even yet still more debugging output
Oops. Meant "text" not "string"
Separating statements fix

\w includes the underscore character. So if a . is followed by a <br>,
at this point in execution it would pretend not to be the end of a
sentence.
Rebuild js
Turned off debugging and rebuilt js
Revert "Just learning"

This reverts commit 0ac4de4cc289eb80b254f5cd06c8d17d5e9f146a.
Re-add debugging

Look let's just pretend this didn't happen ok? Act natural.
Turn on full debugging.
Let's consider span a block element
Turn debugging back off.