I'm a fan of bonded aluminum frames.
As you explained, they are light, responsive and ride very nicely. The flex seems minimul too. I ride a Miyata, 1400A and it sounds alot like your Technium and they were built around the same time to. Even has the full Shimano 105 gruppo as yours did. If their advertising is to be believed, the bonded connections on the frame are the strongest part of the frame. I think the bonding failure stories have been overblown and have reached urban myth status, which unfortunately have tarnished what is a very nice frame to ride and to look at. They are still good looking 20+ years later....
Get well! (and find another Technium!!!)
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It never gets easier, you just go faster. ~ Greg LeMond