I have the same symptoms although mine are mild. For nose stuffiness I use nasal spray decongestant; but only to sleep . I don't use it during the day as it can be habit forming . I look at the ear pain as a good side effect . I feel the drugs are working hard targeting the tonsil tumor. I'm sure there are things happening on a cellular level that likely cause inflammation.
I too have tonsil cancer ; my ear and nose symptoms subsiding as tumor shrinks . I hope your husbands tumor is shrinking too!