You mean these pins

:
View attachment 119370
The car's feeling a bit nude here.
As you can see, I didn't so much as have to take the radiator out, as take the bits of remaining support off the radiator.
If yours is as bad, a tarpaulin underneath will stop you getting nasty shards everywhere.
Also, you can see the point to the right where the wheel arch liner attaches.
When you're at it, and if you've got the time, give the chassis legs a new lease of life with a wire brush and some hammerite, then underseal.
I did it over a weekend on ramps, and took the time to semi-restore the front end.