Solution? Wait for the wheels. You cant move the aircraft off the spot without the wheels. You can always find the aircrew and send them flying for the rest of the fly on or send them back to the beach and catch them last.
That said, you're not really "fouling the deck" per se. You can still catch other helos on the remaining open spots. But now your air plan that depended on 6 spots is shot and having a skid stuck on spot 2 and or 4 can make it hard/impossible to bone the V-22s. Sometimes you can pull past but then boning the v-22s takes a lot more time and continues to have ripple effects on your air plan. Generally you make a mess of the bow to keep the other spots open and to do as much as you can. Eventually the wheels will show up or be found and then you spend a lot of time sorting out the mess up front.
Impacts also ripple past the air plan because the ships plan probably says something like "fly everyone on in 6hrs, then sea and anchor, then pierside for onload, then off to sea." But then 6hrs expands and everyone's plans collapses and now everyone is making it up as they go along.