The two vortigaunts in bm_c1a2c around that corner always stay at their position. They never move from there. There’s an explosive box at the other side of that corner but I can’t lure them to the box. I’m sure that in the mod version they walk around the corner after they recognized you.
Position: setpos 1233.471191 442.335419 280.031250; setang -2.651017 102.875595 3.781560
edit:
Same for the vorts at setpos 641.545654 917.381592 11.768929;setang 29.464008 93.031288 0.000000