O2 Sensor Hard To Reach

[acasas]

Has any1 removed oxygen sensor on nnbs RCSB silverado? I went under my truck yesterday to spray some WD40 on my bolts. Got all of them except one thats right above the 02 sensor on the passenger side. Man is that a tight space, couldnt even get my hand up there with the smallest can of WD40. The only way i can think of is taking off the tire and the well guard. Oh by the way i was spraying my manifold pipe bolts and o2's. Trying to lossen them up for som weekend bolt on fun, what should i do? How do i get the o2 sensor off on passenger side above cat? with out damaging.