mudgudgeon
Resident galah
Take no prisoners!!
I use these universal joint sockets a lot for stuff like that.
Pretty sure I've had thermostats housing out without too much hassle, with exhaust shield in place
Keep the skin on your knuckles intact in the future.
I also have taken the exhaust shields off, and bolts are now generously coated in anti-sieze paste.
30 seconds would have that shield off next time its in the way.