Here, a quick analysis of the spree:
In his own words:
Remerited all my merited posts since my last spree (+ some backlogged pending ones), for non-banned users (from last friday backwards).
Full doubler again ... remeriting each concerned post with the same amount of merits as the first time.
That should equate to having handed out a higher amount to begin with, effectively converting 1->2 , 2->4, 3->6, and so forth.
Already remerited posts are not merited again.