Hey there, JWilcox79.
To start, can you confirm that you've removed the photos using the following steps?
"Delete from a Shared Album
- Open the shared album.
- Tap the photo or video.
- Tap the Trash button
. - Tap Delete Photo.
If you're the owner of a shared album, you can delete any photos, videos, or comments from anyone. Subscribers can delete anything that they personally added. Anything you delete is automatically deleted from the album on all your devices and the devices of subscribers.
Any photos that you saved or downloaded from a shared album to your Photos library stay in your library even if the shared album is deleted or the person who created it stops sharing it." How to share albums in Photos on your iPhone, iPad, and Mac
If so, make sure that your iPhone is up-to-date, as this can often help resolve unexpected behaviors.
How to back up your iPhone, iPad, and iPod touch
Update your iPhone, iPad, or iPod touch
Also, Restart your iPhone since this too can help resolve issues.
We hope this helps!
Sincerely.