Not can; the ai is definitely more aggressive than they are suppose to be when put on defense, no matter your settings. This was a problem from last year that never got fixed. I think a lot of this has to do with the offensive zone blue line - since everyone is at the line and the computer has better acceleration I think they just take it upon themselves to go up.
With just 2 human players it's always recommended to play as a C and D (you can be a Sniper in this mode; it doesn't matter much) and just have the AI stay F since they aren't very good at defense and will move up anyway.
AI passing is a weird one because yes, they do look for open lanes but they definitely aren't aware of human coverage. AI offense and defense stick with their scripting and are unable to think like humans. Yes, in normal situations that pass probably would have worked, but there have been so many times (more in 6's than 3's), where the computer just passes right back to you when you're swarmed by 2 or 3 guys. Them not passing when you call for it (especially on 2on0 breakaways) is just plain unacceptable.
I don't know anybody who uses the touchpass mechanic on purpose but Aljo is right, it's still something you can technically control.
Not saying it's perfect at all though - ai passing is random at best and plays happen so fast it's a total rage inducer to just launch the puck up when you would of had a perfect opportunity.
At the end of the day you just have to assume your ai will screw you over. It might go against your team's nature but you just have to take things slow, especially in threes. Dance around a little and force your ai back on D - The other team can't afford penalties so make the most of it.
The fairy twirling and one-timers will always be deadly like real life, but you'd think they'd bring BAP's "ai learning" over to EASHL to help alleviate certain problems