clogged heater return pipe

[ardenmd]

Unfortunately, the pipe that runs from the heater core and transports coolant back to the water pump is clogged on my '72 280 SEL. While changing out the heater hoses, i wanted to make sure the pipe was clear, but it seemed to be clogged. I even attempted to clear it with a snake, but it wouldn't budge. My question is can i pull the pipe without having to remove the intake manifold. the pipe runs underneath the manifold and has a bracket that holds it in place that is now making it hard to remove. I'd rather not have to take off the intake manifold. Thanks