Absolutely. It's easy to see from the responses to this thread who's got any knowledge of metal. Metal can't be bent and rebent willy nilly. Ok, it can be physically beaten into shape but that doesn't mean the crystaline structure is happy. Cast metal is notorious for cracking at the best of times. Add to that that aluminium based alloys both age harden and work harden the metal becomes more brittle.
These wheels can most likely be fixed, but as above it's a job for professionals with access to controlled heat and NDT facilities.
The heat must be controlled in temperature, controlled in length of time exposed, and must be uniform across the whole piece, not just the bent bit attacked with a B&Q propane blow torch.
NDT is required to inspect for cracking of the alloy. NDT involves techniques such as dye-penetrants, ultrasounds and x-rays. "Inspection" isn't just a case of staring at it and concluding that it's probably fine.
Again, having done a few miles with no obvious problems so far doesn't mean you don't have a crack growing in length each time the wheel rotates. Just ask any aerospace engineer. The cracks that kill people are the awkward little sods that are really hard to see and nobody spots them until after the complete fracture of the part in question.