[Q] Relock TP2 & Activation w/Sprint

[JustLok]

I'm looking to resell this phone since I've already moved on (sad to say) but want to put it back into stock so that whomever buys it from me won't have to worry about relocking, reflashing, and whatnot.

Question is: I've already re-flashed it to a stock Sprint rom but do I need to relock the hard-spl in order for someone to activate it with Sprint? Or can someone still activate it with Sprint without hassle while it's still spl-unlocked with olinex?

Would love to hear from someone who's gone through this, thanks.