When Haines reopened his recruitment a couple years ago, the schools he considered were the same schools he considered pre-verbal: OSU, Maryland, and Cornell. Lock Haven made a late push for him and made a good impression.
It sounds like he went to a place he already knew and liked. If he didn't want to be bothered with the recruitment process for a 3rd time and just called Scott Moore, who could blame him? (Not saying this is what happened, but it does make sense and wouldn't be the first time an athlete did this.)
Spencer Myers is on staff at Lock Haven, so he has a great workout partner there.
As far as the other schools go, now you start getting into rosters and scholarship allocations, and remember LHU is in-state and cheap before scholarship. Maryland has Peck at HWT -- Haines is much better, but do they have any money? They're out of state, he'd lose a year for B10 transfer rules, and I'm not sure he'd have good workout partners. Koll likes Sweany.
I don't know his relationship (if any) with the other schools ... Lehigh has 2 heavies + Wood coming in next year. He would be great for Pitt but they make no sense for him except a starting spot. He'd be an upgrade for Edinboro, but would Flynn really cast aside RS FR Miller?
This move makes a ton of sense for Haines. Best of luck to him (except of course against us).