Back to the OP. I like the play. In a casual game I'd probably have let it slide. Obvious mistake that shouldn't color a whole game. In a tourney. . . It's a move that takes Jake out of play for a couple moves giving you an advantage. But it doesn't completely hammer a guy for making a simple mistake. It's a good balance. A win without either coddling your opponent implying he can't play on a level field, but also not taking a third (?) Of his fleet out of play. I call it unsportsmanlike from both sides and kinda classy. That's the kind of tourney play I wish was in my neck of the woods. Might actually show up
Picking your opponent's maneuver in a tournament
To be clear to the OP, I have no problem with his call. Like I said; if you're in a duel, you disarm the guy, and you decide to let him pick up his sword before resuming, have at it. For me, since he asked, there's just a big difference between casual play and tournament play, and in competitive play I tend to play pretty ruthlessly.
Part of that is just coming from a background in sports where there is no do-over, no second chance, when you make a mistake. You get used to just picking yourself up and carrying on, because what's done is done. And that's just how sports, in general work; it doesn't matter if you win because you landed a hole-in-one or because the other guy missed a single putt on the first hole. Doesn't matter if you fake the goalie out on a breakaway, or if their defenseman tries to pass the puck back to the goalie and accidentally puts the puck in the back of his own net.
I once saw a goalie in soccer try to dropkick a ball downfield, slip, and wind up kicking it up over his head and into his own net as he fell. Fluke accident. One in a million chance. Still counted as a goal for the other team.
So coming into competitive play from that kind of background, as long as you're playing within the rules and not deliberately being an ass about it, to me it's all good. I'm the same way board gaming with friends - if we're playing Cosmic Encounter or something, I will lie, break deals, abandon allies, and do whatever it takes to claw my way to solo victory if I can...because all of that is allowed within the rules. If we're playing Pandemic, on the other hand, I'm the most selfless, self-sacrificing teammate you could ever have...because that's the cooperative nature of that game.
I've got no problem with people who offer quarter, or give their opponent a break. Certainly if it's a new player, or a good friend or something you might be inclined to cut them a little slack. If both players are consenting adults and agree to allow it, unless the TO objects for some reason, go nuts.
I just get very frustrated, as Vanor pointed out, because a good many people have come to expect, even DEMAND that kind of leniency, and feel that you're being cheap, petty, and unsportsmanlike should you ever fail to offer it.
Also, don't forget, if you are an Imperial player, you are required to show no mercy! Especially if you actually have Vader on the board!
A thought occurred to me semi-related to this topic. I realized that in a general sense you could group people into two camps. (Of course anytime you do that there's always outriders...)
Camp 1 is the group that doesn't want to win by taking advantage of a mistake by the other guy.
Camp 2 is the group that would rather lose fairly than win because they got help.
I'm part of camp 2. If I make a mistake and the other guy lets me fix it, then that taints my victory, it's like I mentioned above about mulligans in golf.
If I were playing a game and I forgot to set a dial or set it to a red maneuver when stressed, and someone didn't take full advantage of my mistake by sending my ship in to a rock or off the board. If I wasn't already winning or likely to win anyway. I'd feel it was a cheap win on my part.
If someone set my dial to what they thought the move I would of made was, or the best move they think I could of taken. I'd concede the game right then and there, because there is no way I could win fairly after that. Not unless I could somehow give the other guy as big of a gift. I'd much rather lose a game fairly than win because the other person let me.