Can an opposing attorney seek relief from a judgment, dismissal, or other proceeding against the opposing attorney?

Section 473, subdivision (b) provides for discretionary or mandatory relief from certain prior actions or proceedings in the trial court. "Under the discretionary relief provision, on a showing of 'mistake, inadvertence, surprise, or excusable neglect,' the court has discretion to allow relief from a 'judgment, dismissal, order, or other proceeding taken against' a party or his or her attorney. Under the mandatory relief provision, on the other hand, upon a showing by attorney declaration of 'mistake, inadvertence, surprise, or neglect,' the court shall vacate any 'resulting default judgment or dismissal entered.' " (Leader v. Health Industries of America, Inc. (2001) 89 Cal.App.4th 603, 615-616.) Applications seeking relief under the mandatory provision of section 473 must be "accompanied by an attorney's sworn affidavit attesting to his or her mistake, inadvertence, surprise, or neglect." ( 473, subd. (b).) The mandatory provision further adds that "whenever relief is granted based on an attorney's affidavit of fault [the court shall] direct the attorney to pay reasonable compensatory legal fees and costs to opposing counsel or parties." (Ibid.)