Hello! Yes, trapping it would be fine. The Gods will not intervene beyond what they're already doing. The influence of the Heralds is similar to a storm, so weathering its impact is both expected and possible.

We would suggest trapping it at the end of the event since its respawning ability is so that players can encounter it freely without complex coordination. As long as the timing of the trap won't interfere with others who want to fight the morbol first, you may proceed.