What is the test for a motion to withdraw an attorney from a personal injury action?

(Falco).) It is irrelevant whether the attorney or the client caused the breakdown; the relevant consideration is the effect the breakdown would have on the client's legal representation. (Ibid.) Although a trial court may not simply " 'rubber stamp' " an attorney's withdrawal request, the court may accept the attorney's good faith representations unless the court has reason to doubt the attorney's sincerity. (Aceves v. Superior Court (1996) 51 Cal.App.4th 584, 592, 594.)