Can't speak for the type in question but on some military aircraft types the checklist advice following partial gear extension was to abandon, rather than attempt a belly/forced landing.
the CT-156 has zero-zero ejection seats, so even if it went tits up on the roll out, they would have a safer parachute landing on a nice big airfield than out in that terrain.
Again can't speak for the specifics here but we used to warned of the dangers in relying on the seat following a "forced" landing, especially if there was gear damage and most especially if you've gone off piste or there was a in danger of doing so....the logic was that the seat might be damaged in the course of the forced landing, especially if things got rough and there was structural deformation. The worries were it subsequently might not operate, or might fire accidentally, or might not function properly even if it did fire.
I'd imagine the decision to abandon would been made after discussion with those on the ground, would not have been taken lightly, and care would have been taken as to where the aircraft eventually ended up.