I personally think this is Intamin teething issues combined with the fact that the ride sat idle for too long. If you let a car sit for a year or two you're almost certainly going to have issues with it when you start driving it again.
I also was thinking -- and I don't know if this is the case -- that maybe since SEAS left the ride sit for so long the time period that Intamin would have on-site assistance for the opening of a ride had expired so the park shot themselves in the foot and now they are trying to figure things out over the phone -- and this coaster has technology that isn't like anything else BGW has worked with before. It's my understanding that when you get a ride from Intamin they'll have someone on site for a determined amount of time at opening specifically so they can work with the park on issues that occur but, of course, that's built into a schedule. With the way BGW/SEAS kept delaying the coaster without being up front about it it could just be that Intamin doesn't have people available at this point as they are needed on other projects.