I arrived in a Saskatchewan bear camp the day after a hunter stuck a huge boar exactly like that.A big group of us combed that jungle for quite awhile that day till the outfitter decided that the bear would make it and puled us off.I didn't say anything but I thought he was full of it.
The outfitter decided to give that bait a rest so I'm not sure if the bear came right back.
The following year,another hunter arrowed the same huge bear.They tracked it into the brush,jumped it and the outfitter took a snap shot with his .375,hitting it through one of the hams,going away.He told me that 3 days later,there was a blood smear on the bait barrel,where the bear had come back in to eat.
He told me that those dominant boars own that piece of turf and they aren't leaving.I don't know about lesser bears and who knows if that bear came back in after dark?
A few years later,I ended up in that camp one week as the only hunter and spent quite a bit of time talking with this guy and there were a lot of stories about poorly hit bears surviving and coming back and he had the tanned hide of the giant boar I talked about.
It had been finally taken at the same bait site,but out of a different stand set back farther,by a rifle hunter.He said it was an honest 600 lb bear and as a taxidermist who has measured a few bear skins,I believed him.
They learned that the first hunter hit him under the spine.The second guy hit it quartering away and the arrow skipped across the ribs and under the shoulder but didn't enter the rib cage.The scars were there from the .375 as well as from all his fights.A true giant bear.
I don't know if your bear will be back this year or not but I do believe in perserverance.Try sitting the bait.If one thing doesn't work,try something else.All you have to lose is a little time and I have to think that time spent in the Canadian bush is time well spent.
Good luck.I hope we get to see a picture of you with your bear.