Hello- soliciting some advice on repairing these cracks. Planning on mudding and taping the drywall return(s) (what I call the window sills). My main question is on the cracks on the walls themselves - long vertical and horizontal cracks where metal corner moldings have raised slightly. They flex when i gently press on them. Should I mud and tape them or can I get by (like a previous repair) using a utility knife to carefully trim/cut out the raised edges into a thin 'V' shaped channel and then fill with mud and sand smooth? I think that would be less sanding and resultant texturing than a complete tape job.. Wondering what would work best. As always, thanks for your help.

 

If the metal corner bead is flexing, I would nail it secure in several locations along the length, setting the nails/screws below the surface slightly, then skimming it over with mud. Not sure why the bead is releasing unless it just wasn't installed properly.

 

I've never liked it but some hangers use a crimper instead of nails to secure the bead to the wall
That relies on the crimping/mud to hold the bead in place, not uncommon for it to fail after a few yrs