Mr.Cat
Yes, the blades do fold up, but prior to the "rabbitear" syndrome the disc tends to make fuselage contact usually on the tailcone @ the strobelight. And there is the statistic of most of the inflight breakups of the R22. But rpm is controlled by the pilot and therefore it's considered pilot error. (??)
as far as the high rate of roll during low G ,it has to be pretty extreme to roll that fast, that's why it generally not practiced anymore, rather you practice recovery at the first indication (light in the seat). Now I don't know how rapid other AC roll since most operators don't practice it.
The R22 is widely used as a trainer and you tend to do things that you will not do in other AC, and I believe it is reflected in the accident statistics.
But then there are three kind of lies: Lies, damm lies and statistics.
Happy Holidays.
Talk to you next year.