2012 V: Trouble removing OEM front wipers

Long time lurker, first time poster.

I've changed my wipers a few times over the years without much problem. I am currently struggling to remove the front wipers which are OEM Toyota parts from my local dealer. They refuse to come out with moderate effort and I don't want to exert any more force until I get advice.

There's a tab to flip up and normally I'd just pull to disengage from the hook end. But, neither front blade unit will come off. I looked for another tab or clip that would need actuation and can't find anything appropriate.

Due diligence: I've watched a lot of YT videos and searched the Forum. The Forum has several older posts about this but a key photo is not appearing in the messages. I am doing what the videos say and they're all in line with what I've done in the past but the blade/frame won't come off this time. I'm replacing with Anco blades so I don't have any OEM removal directions.

I've enclosed some photos of the assembly from various angles. I can upload higher resolution images if needed.

Advice appreciated.