Spark plugs replacement and manifold removal

Hello,

New member and owner, 1967 Barracuda. It came w what a hopped-up 340, what a surprise.
As I was swapping out the plugs, both 5 and 7 are trapped by the exh. manifold.

Please tell me there is an easier way that taking the drivers side exh. manifold off for these plugs?

Thank you.