lets say a Romanov escapes Russia as the communist party takes over then at the fall of communism He/she reveals him/her self would the russian government give them a kind of figurehead status or just tell them to buzz of
It's been almost a century since, and there are heirs who do claim the throne, but with the Communist Government still having somewhat of an influence, not likely. Also, Putin wouldn't allow it since he will probably end up as a dictator in a year anyway.
The POD only makes sense if it is Nicholas II, Alexei or Michael who escapes, since a lot of the other cousins did anyway. Kyril didn't get much support for his claim to be Tsar, not least because Nicholas' mother refused to accept that both her sons were dead (the Communists hadn't exactly provided the bodies).
There were rumors near the end of Yeltsin's last term that he might bring back the monarchy due to a meeting he had with the heir to the throne. As you can see, nothing came of it.