Yeah, no worries, you are totally free blame me if it (recount) somehow hoses your DB, I'm not worried!
I've had it get stuck sometimes but it is essentially looking for mismatches in batches of 100, so you can always just restart it. It is basically only just copying the length of the array of the [posts] for a user into the displayed "posts" field...
It is really rather harmless...
On other SMF topics, I would really rather discuss directly with Dave first, and NO, installing
additional mods on the current 2.0.18 system is
not what I'm suggesting.