Nicklaus never had a swing change either. or a car wreck, or got caught screwing around on his old lady, and he def was never expected to win every tourn he ever entered. I wouldnt worry about the putting stroke, thats the least of the concerns.
Where you been Red Eye?
Thats Not Nicklaus's Fault that he lived a clean life... Lets not make excuses because Tiger was at the top of his game and decided to screw it all up by banging everything in sight and getting caught. BTW I dont think Nicklaus did steroids either..