ok.. so the other nite i was out in 14 inches of snow. i got stuck 3 times, 2 of which were not for bery long, but the third time was prolly for 20 minutes or so. then, yesterday i got stuck in my driveway again for a few minutes. now when i drive, as soon as i get near 50 mph, my car shakes, and then about 55mph, it shakes so much it feels like its gonna fall apart! did i do somehting to the differential? or just the alignment? any solutions?