The post-Bubble shakeup at the Hirshhorn Museum and Sculpture Garden continued today with the sudden resignation of the chair of its board of trustees.

Richard Kurin, the Smithsonian’s undersecretary for history, art, and culture, announced the decision not to move forward with the ambitious project today, citing financial uncertainties.

The decision not to make a decision led the museum’s director Richard Koshalek, who first conceived of the Bubble, to resign.