No, there wasn't any suspicious behavior. Clockwork have been around quite a while and have some very successful products (they have a very popular German language game, that I forget the name of, and a number of fairly big licenses). They've not said much about what happened but have said that this came out of the blue and was very sudden. They've talked about trying to get their kickstarters fulfilled and finding ways for various projects to continue but have, so far, been very cagey about addressing the reasons for the insolvency in any detail. I'm assuming that's because there's legal issues to consider.
For the record they fulfilled 3 kickstarters that I backed. The first one, the English translation of the Ubiquity-powered Space: 1889 core rulebook, was delivered very late but, in their defence, it was originally being run by Angus Abranson/Chronicle City and Clockwork stepped in and got things going again after Angus dropped off the face of the Earth for several months (maybe a year or more?). Without Clockwork stepping in and taking full control there wouldn't have been anything delivered at all.
I'm sad to see them go as I was looking forward to more Space: 1889 books, like the Luna sourcebook, in the future. I'm hoping someone picks up a few of their English-language projects soon.