It seems strange that Google wouldn't have a policy of issuing warnings, escalating warnings, etc., before taking the drastic action of suspending an account. Without knowing the exact reason this person's account was suspended, for all we know it could be a complete glitch.
There was no TOS violation, just an algorithm gone wild.
This happens to me all the time but with Google adwords
- Google Adwords tells me not to run more then one domain in an ad group then suspends the ad group... that has only one ad in it. Takes a week for Google to undo their suspension.
- Google Adwords suspends an ad, support says that during the signup process there should be a page that links to competitors with a comparison of prices as features. Sort of like going to a K-Mart but once your at the checkout the checker says "you shudda gone to Wal-Mart sucker!" (to save a dollar). Takes a week for Google to undo their suspension.
etc and so on. If you spend 20k a month or more with Google adwords when Google wants to give you pain they find very unusual ways to do it I presume to mess with your click history to force you to pay more, so Google quarterly profits go up. I presume this happens throughout Google's products.