I find that pretty unlikely, considering that the CW is tottering on the edge of existence. She's not going to sabotage some of the few shows she has that get decent ratings, or there's not likely to BE a CW next year. I assume the "no promotion" thing, as usual, is related to the extremely limited budget they have for promotion, so they're saving it for their new shows.

I suspect it was stupidity rather than deliberate malice.