Time paradox?

Ok psionic crew:let me know how you would DM this scenario.

1) Party starts a fight against some opponents.

2) The party's Nomad starts for first, and manifests a Delayed Time Regression.

3) The party's Rogue follows in the initiative order, and in the first round of combat uses his UPD skill to manifest Time Hop on the Nomad with a dorje, making him hop forward in time for 5 rounds.

3) At round 6, the Nomad appears and the Delayed Time Regression triggers.

Now, what happens?

In fact, the "previous round" for the Nomad was the first round of fight.

Does this mean that Time Regression will regress the time to the start of the fight, erasing everything in the middle?

As written? Yep it appears so.

Instant house rule: NO. Time hop is already stretching things to the limit - he gets thrown back one round objective, not subjective, and overwrites a moment in history where he was stuck in suspended animation, and continues on from there, having had no real impact on history.