Accepted answer: no
I've just picked up the Tithe Box from Dawnbringer Natrisse, who has asked me to deliver it to Brother Merring back in West Harbor. I remember from past playthroughs that it's possible, through some skill checks, to open the box, and skim a little off the top before making the delivery for some bonus XP, Gems, and Gold. Unfortunately, while I seem to be able to buff myself enough to pass the initial Search check, I can't pass the Disable Device check, nor can I pawn it off to Neeshka.
What's the minimum Disable Device skill required to rob the church box? Are there other, further skill checks required that I'm forgetting about? Or is it just flat out impossible to get enough Disable Device from buffs and equipment alone to pass this check as anything other than a Rogue?