New languages?

My favorite yellow rag (Ekstrabladet) contained a reference to a
reference of an interview with a "Polish professor", in which it was
claimed that the East Europeans were beginning to solve their
problems of cooperation by inventing new mixed languages:

Belarussian-Russian: trasjanka
Ukrainian-Russian: sursjik
Polish in Lithuania-Belarus-Ukraine: prosta mova

The spelling is the original (in the paper), for which I apologize to
the parties concerned.

Anyone heard of these languages? If yes, do they show interesting
creole devepments (regularizing or loss of inflections, etc)?

Torsten