Phone broke, switching sim to new phone, do I get charged my full tab bonus?

If you are not getting a new phone on the tab through koodo then you are correct. You'll still be charged the monthly tab and the tab bonus will reduce in the background just like it has been.

Your tab has really no connection with the service… You can continue to pay off the tab for the broken phone, while using a new phone acquired elsewhere (Google) - no problem at all. Over the years I often used a different phone with my plan than the one originally from the provider. In fact, if you already have a good working phone when signing up for a tab, you could immediately sell the new phone and continue using the old phone too.

Of course you are still responsible to eventually pay off the tab before getting another phone through Koodo Tab, that’s all.

I ordered a new phone from Koodo on the tab under my post paid account for my husband who has a pre-paid account (pre-paid has very few phone choices).

I continue to use my old phone and my husband just popped his pre-paid sim into the new phone. No problem. The tab payments continue monthly under my post paid account even though my husband is the one using the new phone on a separate account.