There are a number of reasons that Ewan has moved on and Alan is back. I won't get into it to respect Ewan and HM privacy.
I know Ewan enjoyed playing with HM and enjoyed finally getting to play with Corey. Ewan just likes to play as much and as often as he can.

I was glad to see Alan was back, i'm sure whatever reason for there falling out has been smoothed out and HM will move on.

I think it's inevitable that the GB will return sometime, it was Graham's health and long hard touring that ended it. I can't imagine they will do as many shows as they were doing and have the same lineup as some have moved on and won't be back. They are a good band and seem to get to all the big festivals. They likely will pick and choose the shows they do instead of extensive touring that took it's toll on Graham's health over time. Who will be back, when or if they are returning is just a strong rumour right now, we'll have to wait and see.

Ewan's a good friend of myself and my family and a very good friend of MacHummel's and family and we will follow and support him wherever he goes. We also consider the guy's from HM friends and will continue watching them live and enjoy seeing them when we can. I'm sure we'll catch them in Kincardine in early July if not sooner. And possibly more beers by the campsite in Fergus.

We wish them all well,

Kilted Stuart