Let me start by saying that I love this game and I think the Blood of Lathander is an excellent artifact. I am still in Act 1 at level 6 and just found my first Opportunity for Improvement for the game. I'm playing a Cleric of Lathander and I was surprised that my character's background did not play into the interaction with the traps nor the artifact in any way at all. Not a huge deal and I'll figure out how to put the artifact in the hands of a Cleric of Lathander, but it's a shame to have to destroy the whole monastery in the process.
I think it would have been cool if my character could have passed through the force barriers and maybe had an interaction with Lathander when reaching for the Blood of Lathander.
That's because you must do the Puzzle with the blessed weapons of the dead priests. If you don't do that, you don't get the brooch from the room with the broken painted glass, and it is that brooch you need to slot in to not trigger the destruction mechanism. Thus, you can save the monastery and still receive the mace.