I believe a leak in a fuel line (even a dissection) would need oxygen to cause an explosion rather than failure, and would not be enough force to cause a struct

I believe a leak in a fuel line (even a dissection) would need oxygen to cause an explosion rather than failure, and would not be enough force to cause a structural failure. The fuel isn't under extreme pressure, else those pumps wouldn't be needed, and Pogo effects wouldn't have been a problem.