Our focus should be on protecting this universe and those living in it. I hate pointing that out that this is all bigger than hurt feelings, bruised egos, and pissing contests. I really hate pointing it out to Stark, which I've done before. Pepper's the best way to get through to him without too much drama happening.
Because, from what I'm gathering, you need practice space without treading into a different dimension. Where you aren't going to get arrested.
That's my best advice. That, or find a field and hope for the best that it's not private property that you're trespassing on.