I like this.
For a multiclass PrC, this requirement is kinda high. Most such PrCs require one maneuver and one stance - and thus can be gotten into reasonably using Martial Study/Martial Stance. Since you already require two Feats, that's 4 and the limit on getting in on 6th (and then only if you are a Bonus Feat Race)...
Their progression is slightly better than other PrCs, you know. Most PrCs offer maneuvers known on 5/10 levels, maneuvers readied on 3/10 levels, and stances on 1/10 levels. A couple do maneuvers readied on 2/10 levels while stances also at 2/10 levels. Nothing crazy, but it is something to be aware of.
I like it. But then I really dislike the non-stacking nature of criticals in 3.5. Others may disagree.
This is good.
This is fine. Poor fire damage. Maybe half-fire/half-"fury" damage, or something?
This is cool.
Whoa! Con damage per attack, every attack? That's far and away the most powerful ability you're offering from just maintaining Psionic Focus; why would anyone use anything but this? The rest seems fine, but that seems extremely powerful.
Solid, I like it.
If only that feature was good for anything... It has to be here, it's fitting, but meh, is that feature weak.
The range is huge, which is nice, but you can't use it until after the action has completed (nullifying the ability to counter that attack), and it's just a single attack. I dunno. Allow the use of a Strike, perhaps? Or allow it to happen first, so you can disrupt spells or something. Of course that would require changing the trigger...
That seems like a lot of damage for a single maneuver. Plus it burns a Swift action. I love the flavor, but I'm just not seeing a situation where this is really the way you want to be recovering maneuvers.