Can we trust the people who strip down there programs??
Well, I'd say yes, since they have a reason for doing so. Money. As their main sale is based on antimalware procuts, they have to get their money from somewhere, so they have to sell their product(s). If they offered the full version for free, would anyone pay for it?
Do you think Stand-Alone AS programs will become free no more?
I don't really know, but if the company can afford to give it for free, I don't see a reason for why they shouldn't (as least for home users). But of course, the company might want to make more money, so they might start to charge their users for using the product.
But products like SpywareBlaster and Spybot S&D will most likely remain free until they're discontinued. Both companies behind these products, like Comodo, think that home users shouldn't need to pay for security softwares.
But in case all other company wants money for their products, we'll always have Comodo

Cheers,
Ragwing