What was the queue like before? Those don't seem
large values (not that I know how big pt.wikisource is, so it's a
little hard to judge). If it's been going both up and down, then I
doubt it's a result of an event 9 days ago. There have probably been
other edits to templates.
PS I've just looked at the recent changes and there haven't been any
template edits since the one you mention. Do you transclude pages from
other namespaces (userboxes in the user namespace, perhaps)?