Here's what I would do with the puppy.
I would pen up the puppy or somehow restrict his access to the entire house, which may be tough since apparently he now has full access?
To housetrain, it's easier when the puppy has less access, so he's not going potty willy nilly all over. He is not housetrained yet, and he's piddling/pooing possibly because, as mentioned, your husband may intimidate him while you don't.
Anyway, use an x-pen or gates, crate the puppy at night, and whenever he is not supervised.
When you open the crate, pick up the puppy and carry him to the potty spot outside. Don't expect him to walk to the door then out it, he won't make it.
When you're up and around but too busy to 100% supervise the puppy, he's either tethered to you or your husband, or in the x-pen or crate.
Once you start doing that, things are liable to improve on the housetraining front.
I agree with others, it's not the puppy's fault or plotting against hubby, it's the husband's demeanor most likely.
runs away from him to pee/poo
He's not running away to deliberately
pee/poo, he has to go but doesn't want to come to husband. Don't have husband call puppy, either, simply pick the puppy up and take him outside
Be sure your husband is rewarding afterward and having a "potty party" after puppy's done outside, "What a GOOD PUPPY!" in a higher pitched, happy voice. Many times men's voices are deep and booming and tend to frighten dogs. When he calls the puppy, have him do it too..."What a GOOD BOY, let's go outside!"
You know how humans instinctively use higher pitched voices to talk to babies? Well that's how your hubby ought to be talking to the puppy