Umm...I guess 'citation needed' on the VAC ban part? Valve has a very strict zero-tolerance policy w.r.t VAC bans. As far as I know, reversals are rare and only happen in mass when VAC bugs out and detects a legit program as a cheat which results in an incorrect ban wave which then gets reversed.
I'm pretty sure that if I got access to your account and got your account banned, you'd be SOL.
On the other hand, VAC bans now only affect the single game that the cheat was used in, so your entire Steam library won't be trashed. Exceptions to this include early Source games (e.g. cheating in CS:S will get you banned in TF2) and HL engine games (e.g. CS 1.6 ban also affects DoD)
https://support.steampowered.com/kb_article.php?ref=7849-RAD...