I didn't have to. I just unbolted it and moved it forward a bit.
Depending on how long it has been it could be a good time to do it anyway.
I removed both the radiator, and oil cooler.. For me it was worth the extra 15 minutes removing them to not have to deal with any 'tight' spaces. After the exhaust was installed, 15 minutes to re-install radiator and oil cooler. And, I needed to flush my radiator anyway.
good pointWise decision IMO. I'm sure this also helped prevent smashing up the cooling fins on both coolers.