This ice spear is actually quite loyal and reasonable, and the only thing I'd hold against it would be assuming that Vandalieu is evil.
To be fair, the Vampires in this world seem completely psycho. The ice spear did a good job in preventing such a powerful machine to easily fall into the hands of bastards like them... But the problem is the ice spear didn't know that Vandalieu isn't with the Vampires, and isn't planning to use it to resurrect a demon king or something.
Otherwise, its way of speaking is kinda annoying, too.
It would've turned out differently if either of them could have connected a telepathic link earlier. If they did so, the ice spear possibly could've judged that it would be fine for Vandalieu to use the resurrection machine, and know that Van isn't one of those crazy vampires. Van would also not have killed the ice spear.
All in all, I think this soul destruction was uncalled for. Vandalieu was inconsiderate, and the ice spear's communication abilities are unfortunately quite low; at least, it has low range.
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The god is incompetent. Wahoo. Should've directly reset his memories and reincarnated him normally if he was a potential threat or something.
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Yeah, I think Van is just playing along with his mom. "I've asked the others after this, but in the end, nobody knew about it." Meaning, he wanted other people's thoughts besides his mom's pretty useless suggestion.