I then went to EasyFind and with "All Words", "Files & Folders, "Invisible Files" and "Ignore Case checked, it showed two files. When I included the Pkg. Contents a bunch more files showed up. Do you think it is safe to delete with pkg. contents checked?
The additional stuff that "Include: Package Contents" finds is the contents of folders that EasyFind found without that box being checked, so, yeah, it's safe to delete it as long as it was safe to delete its parent(s) in the first place.