If the incompetence and egoism found in the WT art department is true-- and idealistic JWs with a talent for art are let loose to do their work--and the department heads are JW zombie company men...........then I can see how it happens.
As a designer/artist myself, there is nothing more stultifying to free personal expression than claustrophobic life in a highly controlling religious institution. (How did you manage it CC?)
One can imagine how the idealist bro gets to work in art at Bethel and finds his creative freedom squashed, what does he do? He doodles and sees what he can get away with, having awoken to the fact that JW HQ is hell on earth and that the organisation is a fraud. His artwork cleverly leaves tiny but permanent marks of his dissatisfaction and he has to look for a way to escape the oppressive cult.
I have heard of one such and I don't suppose he was the only one.
Pariedolia is something visual artists are always conscious of and play with, just as writers, poets and playwrights deal with ambiguities in words and nuance of meaning. The JW organisation however is inclined towards a religious fascism!