Absolutely. Acquiescing just means he pulls more stunts. Take a stand, communicate plainly and publicly what's going on, and then move forward without Trump.
When a self harming maniac puts a bullet through one of his own feet, there's no need to retaliate by shooting the other one. Allowing him to hop on the other leg enables the rest of the body to blame and restrict the arm which caused the injury, without confusing the matter.
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The alternative is to be stuck in his orbit.