Christine Quinn, Christian Dumontet Gonzalo Marroquin/Getty Images; Rachpoot/Bauer-Griffin/GC Images Christine Quinn has accused her estranged husband, Christian Dumontet, of violating her restraining order against him by sending a stranger to spy on her. According to documents obtained by Us Weekly, the Selling Sunset star’s attorney, Jaqueline Sparagna, filed a notice Wednesday, June 5, in Los…