Brick up an old window opening

For whatever reason, the family who lived in our house covered a old window opening with spray foam and plywood. I discovered this mess a few weeks ago while removing the insulation and drywall from the poorly finished basement walls. Cold air from under our porch has been pouring into our house.

To be honest, I also discovered why the previous owner didn't use cement block to close this opening. With most of the work behind the gas meter, the lack of space made it really difficult to maneuver the concrete bricks. At one point I didn't stagger the joints just so I could block more of the opening behind the meter. I'm no mason at all. Cold air pouring in your house is all I wanted to stop.

The pics below show the before and after.