Is my grandfathers spirit in my house?

Well my grandfather (papa gene) died in march of 2008. Him and my mom would always joke about stuff liek she would say "Alright daddy, when you are gone, and you wanna come see me, dont let me see you, it will scare me to death, Put the tv on the baseball channel." He would be like "Okay honey." Cuz baseballw as his thing. Okay so on christmas day my dads uncle (my fav uncle) came over, well my mom and my uncle were sitting on the couch talking, and then they heard something shatter by the side of the couch. They looked and a purple ornament was broken. My mom asked me if i threw it. and i didnt i was in my room way down the hall. And they kept asking me if i did it. Then my mom was saying it was her dad. And i'm not sure. What do you think. (also there was NO way that the bulb fell from the tree because the tree was about 7 feet in front of the couch and the ornament broke way over by my mom.) does this mean anything?