The plan obviously wasn't supposed to work out that way - the rest of the German III Army was supposed to follow on behind the US XI Corps and basically fill in the gap between them and the Oder. The Pact counterattack effectively drove a wedge between them, forcing the Germans to remain west of the river but also resulted in significant damage and disruption to the Soviets involved.
It is likely however that at least some Germans reached the 2nd MARDIV - how else can we explain how the marines ended up with a Leopard III in their ranks? My guess is the tank was part of a relief/resupply force and was cut off with the XI Corps - the tank is probably still crewed by Germans who have been absorbed into the division.
I suspect that the nearest intact bridge to the mouth of the Oder was in the area of Berlin, a good 100-150 km inland. This distance is almost insurmountable, especially if my proposal that the 2nd MARDIV lost the vast bulk of it's fuel reserves at sea is accepted. Corps HQ, 50th AD, 116th ACR and the Canadians would be forced to give up a large proportion of their reserves to allow the marines to extricate themselves from the Wistla delta and rejoin the Corps. I would suggest that this loss occured after the 8th ID had passed through and could have been either an accident, or activity of some type by the enemy (could have been a spetnaz raid with limpit mines, rare airstrike, missile attack, or possibly torpedo boat).
Give the XI Corps a few months to distill fuel and they might have a chance -
if they've got enough ammo left after the offensive/counteroffensive.
The only port available to the XI Corps is Kołobrzeg. No vessel longer than 85m and a draft of just 4.7m can safely enter - this basically rules out anything larger than a large tug or fishing boat, and completely rules out anything capable of carrying a decent cargo (including armoured vehicles). Therefore evacuation by sea is at best impractical and at worse likely to result in the loss of a few ships.
http://www.maritime.com.pl/port/inde...p?p=KOLOBRZEG#
It is also likely that at least one side has bombed the town and port facilities, and highly likely mined the approaches further rendering any large scale movement of stores, etc even more difficult.