Hello there and welcome to BYC!
Yes, this bird does have bumblefoot. Surgery is your only option. Here is a good thread on doing the surgery. It is not all that hard to do...
https://www.backyardchickens.com/t/236649/bumblefoot-surgery-with-pics-and-how-to
If you have any further troubles you can also post this in our emergency section. I have done my share of them and if done right, the bird makes a complete recovery.
The most important thing other than getting the infection out is to keep the foot bandaged until it is completely healed. It can take a month for the wound to heal and the scab to come off. So do not be tempted to leave the bird unbandaged until that scab falls off. Keep the foot dry at all times. Check it often and go back in if need be.
Bandaging is easy. Slice the tube of vet wrap, (you can even get vet wrap at walmart now) into 1 inch slices with a box cutter. Start on the leg above the foot joint and go down and around each toe and webbing a couple of times and back up the leg. Put a piece of gauze over the wound too to protect it from the latex. After packing the wound with neo sporin (without the pain killer) I like to slather on some preparation H. This helps with swelling.
Good luck and keep us posted! Lots of us have done this and lived through it. LOL You will too.