Nothing visible has happened with the old bulb I planted last week, and it's the same story with the "new" old bulb I planted this week. My rescued amaryllis is very, very slowly beginning to straighten, by about 25° over the week. That's what my protractor tells me, and science is nothing without data.
Last week was very grey and overcast, with only about six hours of sunlight bright enough to cast a shadow all week. I'm hoping for more light next week, some tiny little bit of green appearing on the old bulbs, and some more straightening.
It's a good thing I work at home so I can carry my amaryllis around the house to various windowsills so they get the most light possible throughout the day. An outside employer might not be so understanding of my caretaker responsibilities! I shouldn't be taking credit when really it was the sun and plant hormones doing the work. Come on auxin!