When the manipulative, deranged psycho who is your enemy tells you it's a good plan, scrapping it seems like a good idea to me.
Besides, the stick can come from above and the front as well as attack from the sides, it would have taken many "pillars" to be effective. Even Crest, Maytag, and Suspira would not have been enough.
Question though, we've seen Suspira's dress move on its own. (It takes some of her essence to do this) Does that count as sorcery? If not, Suspira CAN use it to disable the "power staff" if at least temporarily, which MIGHT just give Bern the ability to close in and take that smug smirk of Danzig's face. I can't blame her for being unable to be a "pillar." Her endurance and stamina is very low. She just never could take a hit. In addition, we STILL don't know what Melter did to her.