It's not how many times you were involved in wrong doing or how bad it was as long as he's truly repentant.
It does help though having a few good freinds on the JC.
A sister committed adultery and kept it hidden for a year and half while pioneering, when she confessed and cried before the elders
she just was put on restrictions, it's all about who you are in the congr. and how well you're liked.