I get that motivated-mad thing. I've been there.

It's a good thing, though because it gets you to really work at what the problem is.
I suspect, based on everything I know and have read, that your body is just needing to realign. Think about it this way: For years you've probably eaten well over 4000 calories a day - if you were gaining weight over the last several years. Then suddenly you drop that to under 1/2 and start exercising again - so you're really in a nearly 70% deficit, instead of a reasonable 30% deficit. Your body adapts - yes you lose a chunk of weight; it's impossible not to under those circumstances - but after that first loss, your body is reeling from an over 50% reduction in what it's used to. So it starts slowing things down - the "starvation mode" that most people talk about. You, of course, realize that you're creating this metabolic slow down and you start eating more. But at this point your body is still processing your first calorie drop - it's just trying to keep up.
We talk a lot on the boards about lowering your metabolism by eating too little and "starvation mode" (or what I prefer to call survival mode - because you're not really starving in the sense of dying) ... but what we don't think about when we talk about it, is that it's not something that happens overnight. People show weight loss while in this mode because it takes your body a couple of weeks to adapt and slow the system. Same with increasing your calories - your body is just getting used to a LOT less calories, and now you're giving it more, so it takes time to readjust.
It's the same reason that someone who goes on a really bad, unhealthy "fast" type diet loses weight fast at first, but then puts on MORE weight after they go to eating normally. The body takes long enough to catch up that what used to be a small surplus has become a large surplus until the metabolism catches up.
Does that make sense?
So putting all that together for you, for 8 weeks you kinda freaked out your body by eating far too little. Now you have to give it at least that long to adapt to the new calorie level you're establishing. I think the fact that you've only put on 1lb is promising - because 1lb is a blip. It's water weight. It's retained fluid from a workout. Heck, it's high barometric pressure.
I truly think that if you continue to eat at a healthy level - say between 2500 and 2900 calories a day - and make sure you get good macros, you'll start losing weight again at a steady rate. You're just going to have to tough it out through a few weeks of allowing your body to realign again.