“[I]t is well-settled that an attorney sued for malpractice may bring a third-party complaint seeking indemnity or contribution against an attorney, whether retained subsequently, concurrently, or independently, whose negligence has contributed to or aggravated the plaintiffs damages” Bolton v Weil, Gotshal & Manges LLP, 9 Misc 3d 1105(A) [Sup Ct 2005] (internal citations omitted). [read post]