Hopefully, it doesn't come to that. There are enough Ukrainian citizens who want to be in the E.U. and the West, that Ukraine's financial collapse, combined with Putin's annexation of Crimea and support for separatists, can easily result in the fragmentation of Stalin's Ukraine. Pole's don't want Putin to get stronger, but no nation is going to start WWIII over Crimea. Poland can take full advantage of the situation to achieve something substantial.
Szablą odbierzemy, still looking to buy the right one came close at the weekend can't wait to get some practice in, it has been 30 years since I last wielded the Szablą
The West told Ukraine not to fight for Crimea, and the didn't They can also tell them not to fight for Lwów because Stalin's Ukraine is now finished, and they won't. There are also non-Ukrainian Rusyns stuck in Eastern Ukraine (and elsewhere in the former USSR) where Stalin forcibly resettled them, who have rights to consider as well.
More of a pity that you think "true allegiance to Poland" involves signing up to your madcap irredentist scheme to invade a friendly neighbouring country!
Ignore the delusional anti-Polonists, who also hate the broader multi-cultural mix that is the Kresy.
Whats your Problem? do you hate the Ukrainians more than the Poles ?