Didn't need to look. An "attack action" is not the same as a strike (despite most of them requiring an attack). Because Spring Attack only gives you an attack action and not a standard, you cannot combine it with a strike, just like Shot on the Run doesn't let you use Manyshot.
Flyby Attack, however, explicitly allows a Standard action, so it does work.
Now, what it seemed like what he was asking for to me was the concept of the Elocator, so I went off of that instead.
For optimizing Elocator itself, I suggest stopping after one level when its best and most unique ability is gained. Scorn Earth doesn't look like much, but it really is a fantastic ability. Moving along walls, ceilings, liquids, etc. is rather nice. Ignoring terrain modifiers and falling? Nicer still.
Now, there are two more break points for the PrC. Those are 4 (for Flanker) and 7 (for the second 5-ft step). Dimension Spring Attack is done far better by dipping Swordsage for Shadow Blink and Shadow Stride. While it eats your Swift action and has a range of 10ft less, you have your standard action to do whatever you like with (including a strike maneuver, manifesting a power, or just auto-attacking). Additionally, this is Extraordinary and, more importantly, isn't limited to 1/day and still lets you use immediate actions or take AoO's after you do it. The manifester level you lose is nothing to be concerned over, since you would have lost it anyway to get Dimension Spring Attack.
Also, one final point to make, is that you can turn a 5ft step into a 10ft step by making a DC40 Tumble check, as per Oriental Adventures.